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685410488401 = 6262071094543
BaseRepresentation
bin10011111100101011010…
…01100001000001010001
32102112011102202102021111
421332111221201001101
542212210041112101
61242512341253321
7100343053011202
oct11762551410121
92375142672244
10685410488401
112447543966a1
12b0a06704241
134c831995442
14252618155a9
1512c68329251
hex9f95a61051

685410488401 has 4 divisors (see below), whose sum is σ = 685412209152. Its totient is φ = 685408767652.

The previous prime is 685410488317. The next prime is 685410488419. The reversal of 685410488401 is 104884014586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 685410488401 - 29 = 685410487889 is a prime.

It is a super-2 number, since 2×6854104884012 (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685410488461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78936 + ... + 1173478.

It is an arithmetic number, because the mean of its divisors is an integer number (171353052288).

Almost surely, 2685410488401 is an apocalyptic number.

It is an amenable number.

685410488401 is a deficient number, since it is larger than the sum of its proper divisors (1720751).

685410488401 is a wasteful number, since it uses less digits than its factorization.

685410488401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720750.

The product of its (nonzero) digits is 983040, while the sum is 49.

The spelling of 685410488401 in words is "six hundred eighty-five billion, four hundred ten million, four hundred eighty-eight thousand, four hundred one".

Divisors: 1 626207 1094543 685410488401