690716979506 has 16 divisors (see below), whose sum is σ = 1081376737344. Its totient is φ = 330265136784.

The previous prime is 690716979493. The next prime is 690716979521. The reversal of 690716979506 is 605979617096.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569656 + ... + 1960931.

It is an arithmetic number, because the mean of its divisors is an integer number (67586046084).

Almost surely, 2^690716979506 is an apocalyptic number.

690716979506 is a deficient number, since it is larger than the sum of its proper divisors (390659757838).

690716979506 is a wasteful number, since it uses less digits than its factorization.

690716979506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534865.

The product of its (nonzero) digits is 38578680, while the sum is 65.

The spelling of 690716979506 in words is "six hundred ninety billion, seven hundred sixteen million, nine hundred seventy-nine thousand, five hundred six".