696385690 has 128 divisors (see below), whose sum is σ = 1707858432. Its totient is φ = 197406720.

The previous prime is 696385681. The next prime is 696385693. The reversal of 696385690 is 96583696.

It is a happy number.

It is a super-2 number, since 2×696385690² = 969906058473552200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (696385693) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 730254 + ... + 731206.

It is an arithmetic number, because the mean of its divisors is an integer number (13342644).

Almost surely, 2^696385690 is an apocalyptic number.

696385690 is an abundant number, since it is smaller than the sum of its proper divisors (1011472742).

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

696385690 is a wasteful number, since it uses less digits than its factorization.

696385690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The square root of 696385690 is about 26389.1206750054. The cubic root of 696385690 is about 886.3731924585.

The spelling of 696385690 in words is "six hundred ninety-six million, three hundred eighty-five thousand, six hundred ninety".