697788644 has 12 divisors (see below), whose sum is σ = 1395577344. Its totient is φ = 299052264.

The previous prime is 697788629. The next prime is 697788683. The reversal of 697788644 is 446887796.

697788644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

697788644 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12460484 + ... + 12460539.

It is an arithmetic number, because the mean of its divisors is an integer number (116298112).

Almost surely, 2^697788644 is an apocalyptic number.

It is an amenable number.

697788644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697788644 is a wasteful number, since it uses less digits than its factorization.

697788644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24921034 (or 24921032 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 59.

The square root of 697788644 is about 26415.6893531098. The cubic root of 697788644 is about 886.9680288539.

The spelling of 697788644 in words is "six hundred ninety-seven million, seven hundred eighty-eight thousand, six hundred forty-four".