680865431 has 8 divisors (see below), whose sum is σ = 703709184. Its totient is φ = 658076760.

The previous prime is 680865421. The next prime is 680865439. The reversal of 680865431 is 134568086.

680865431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680865431 is a prime.

It is a super-2 number, since 2×680865431² = 927155470261631522, 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 (680865439) 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, 12170 + ... + 38856.

It is an arithmetic number, because the mean of its divisors is an integer number (87963648).

Almost surely, 2^680865431 is an apocalyptic number.

680865431 is a deficient number, since it is larger than the sum of its proper divisors (22843753).

680865431 is a wasteful number, since it uses less digits than its factorization.

680865431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27541.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 680865431 is about 26093.3982263714. The cubic root of 680865431 is about 879.7388304686.

The spelling of 680865431 in words is "six hundred eighty million, eight hundred sixty-five thousand, four hundred thirty-one".