690558696 has 40 divisors (see below), whose sum is σ = 1934205570. Its totient is φ = 230186016.

The previous prime is 690558689. The next prime is 690558703. The reversal of 690558696 is 696855096.

It is an interprime number because it is at equal distance from previous prime (690558689) and next prime (690558703).

It can be written as a sum of positive squares in only one way, i.e., 614345796 + 76212900 = 24786^2 + 8730^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 532191 + ... + 533486.

Almost surely, 2^690558696 is an apocalyptic number.

It is an amenable number.

690558696 is an abundant number, since it is smaller than the sum of its proper divisors (1243646874).

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

690558696 is a wasteful number, since it uses less digits than its factorization.

690558696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065695 (or 1065682 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The square root of 690558696 is about 26278.4835178897. The cubic root of 690558696 is about 883.8940278228.

The spelling of 690558696 in words is "six hundred ninety million, five hundred fifty-eight thousand, six hundred ninety-six".