690531185013 has 4 divisors (see below), whose sum is σ = 920708246688. Its totient is φ = 460354123340.

The previous prime is 690531184997. The next prime is 690531185053. The reversal of 690531185013 is 310581135096.

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 690531185013 - 2⁴ = 690531184997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690531185053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115088530833 + ... + 115088530838.

It is an arithmetic number, because the mean of its divisors is an integer number (230177061672).

Almost surely, 2^690531185013 is an apocalyptic number.

It is an amenable number.

690531185013 is a deficient number, since it is larger than the sum of its proper divisors (230177061675).

690531185013 is a wasteful number, since it uses less digits than its factorization.

690531185013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230177061674.

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 690531185013 in words is "six hundred ninety billion, five hundred thirty-one million, one hundred eighty-five thousand, thirteen".