697041090 has 24 divisors (see below), whose sum is σ = 1812307068. Its totient is φ = 185877600.

The previous prime is 697041073. The next prime is 697041101. The reversal of 697041090 is 90140796.

It can be written as a sum of positive squares in 2 ways, for example, as 690796089 + 6245001 = 26283^2 + 2499^2 .

It is a super-2 number, since 2×697041090² = 971732562296776200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3872361 + ... + 3872540.

Almost surely, 2^697041090 is an apocalyptic number.

697041090 is an abundant number, since it is smaller than the sum of its proper divisors (1115265978).

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

697041090 is a wasteful number, since it uses less digits than its factorization.

697041090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7744914 (or 7744911 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 697041090 is about 26401.5357507854. The cubic root of 697041090 is about 886.6511738739.

The spelling of 697041090 in words is "six hundred ninety-seven million, forty-one thousand, ninety".