690032813 has 4 divisors (see below), whose sum is σ = 712291968. Its totient is φ = 667773660.

The previous prime is 690032809. The next prime is 690032831. The reversal of 690032813 is 318230096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690032813 - 2² = 690032809 is a prime.

It is a super-2 number, since 2×690032813² = 952290566033385938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690032813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690032843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11129531 + ... + 11129592.

It is an arithmetic number, because the mean of its divisors is an integer number (178072992).

Almost surely, 2^690032813 is an apocalyptic number.

It is an amenable number.

690032813 is a deficient number, since it is larger than the sum of its proper divisors (22259155).

690032813 is a wasteful number, since it uses less digits than its factorization.

690032813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22259154.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 690032813 is about 26268.4756504827. The cubic root of 690032813 is about 883.6695994536.

The spelling of 690032813 in words is "six hundred ninety million, thirty-two thousand, eight hundred thirteen".