Search a number
-
+
68506671 = 329787433
BaseRepresentation
bin1000001010101…
…01010000101111
311202220111111010
410011111100233
5120014203141
610444200303
71461203622
oct405252057
9152814433
1068506671
1135741092
121ab39093
1311267bbc
149153db9
156033416
hex415542f

68506671 has 8 divisors (see below), whose sum is σ = 94492080. Its totient is φ = 44096192.

The previous prime is 68506663. The next prime is 68506681. The reversal of 68506671 is 17660586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68506671 - 23 = 68506663 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68506661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393630 + ... + 393803.

It is an arithmetic number, because the mean of its divisors is an integer number (11811510).

Almost surely, 268506671 is an apocalyptic number.

68506671 is a deficient number, since it is larger than the sum of its proper divisors (25985409).

68506671 is a wasteful number, since it uses less digits than its factorization.

68506671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787465.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 68506671 is about 8276.8756786604. The cubic root of 68506671 is about 409.1767557977.

The spelling of 68506671 in words is "sixty-eight million, five hundred six thousand, six hundred seventy-one".

Divisors: 1 3 29 87 787433 2362299 22835557 68506671