696966640 has 40 divisors (see below), whose sum is σ = 1628967168. Its totient is φ = 277320960.

The previous prime is 696966617. The next prime is 696966659. The reversal of 696966640 is 46669696.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7527 + ... + 38086.

Almost surely, 2^696966640 is an apocalyptic number.

It is an amenable number.

696966640 is an abundant number, since it is smaller than the sum of its proper divisors (932000528).

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

696966640 is a wasteful number, since it uses less digits than its factorization.

696966640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45817 (or 45811 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 52.

The square root of 696966640 is about 26400.1257572762. The cubic root of 696966640 is about 886.6196054192.

The spelling of 696966640 in words is "six hundred ninety-six million, nine hundred sixty-six thousand, six hundred forty".