680889695 has 32 divisors (see below), whose sum is σ = 899061120. Its totient is φ = 492728320.

The previous prime is 680889683. The next prime is 680889697. The reversal of 680889695 is 596988086.

It is not a de Polignac number, because 680889695 - 2²⁴ = 664112479 is a prime.

It is a super-2 number, since 2×680889695² = 927221553514386050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680889697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692174 + ... + 693156.

It is an arithmetic number, because the mean of its divisors is an integer number (28095660).

Almost surely, 2^680889695 is an apocalyptic number.

680889695 is a deficient number, since it is larger than the sum of its proper divisors (218171425).

680889695 is a wasteful number, since it uses less digits than its factorization.

680889695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The square root of 680889695 is about 26093.8631674193. The cubic root of 680889695 is about 879.7492807614.

The spelling of 680889695 in words is "six hundred eighty million, eight hundred eighty-nine thousand, six hundred ninety-five".