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680674231 = 719586961
BaseRepresentation
bin101000100100100…
…100001110110111
31202102210211111201
4220210210032313
52343223033411
6151313113331
722603430656
oct5044441667
91672724451
10680674231
1131a24a696
1216bb58847
13ab033b23
146658719d
153eb563c1
hex289243b7

680674231 has 4 divisors (see below), whose sum is σ = 690261264. Its totient is φ = 671087200.

The previous prime is 680674229. The next prime is 680674261. The reversal of 680674231 is 132476086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680674231 - 21 = 680674229 is a prime.

It is a super-2 number, since 2×6806742312 = 926634817494882722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680674261) 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, 4793410 + ... + 4793551.

It is an arithmetic number, because the mean of its divisors is an integer number (172565316).

Almost surely, 2680674231 is an apocalyptic number.

680674231 is a deficient number, since it is larger than the sum of its proper divisors (9587033).

680674231 is an equidigital number, since it uses as much as digits as its factorization.

680674231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587032.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 680674231 is about 26089.7342071551. The cubic root of 680674231 is about 879.6564736110.

The spelling of 680674231 in words is "six hundred eighty million, six hundred seventy-four thousand, two hundred thirty-one".

Divisors: 1 71 9586961 680674231