696912090 has 32 divisors (see below), whose sum is σ = 1911530880. Its totient is φ = 159294144.

The previous prime is 696912053. The next prime is 696912103. The reversal of 696912090 is 90219696.

It is a happy number.

It is a super-2 number, since 2×696912090² = 971372922376336200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1659105 + ... + 1659524.

It is an arithmetic number, because the mean of its divisors is an integer number (59735340).

Almost surely, 2^696912090 is an apocalyptic number.

696912090 is an abundant number, since it is smaller than the sum of its proper divisors (1214618790).

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

696912090 is a wasteful number, since it uses less digits than its factorization.

696912090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318646.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 696912090 is about 26399.0925980421. The cubic root of 696912090 is about 886.5964735797.

The spelling of 696912090 in words is "six hundred ninety-six million, nine hundred twelve thousand, ninety".