669696402 has 32 divisors (see below), whose sum is σ = 1419714432. Its totient is φ = 209873664.

The previous prime is 669696389. The next prime is 669696407. The reversal of 669696402 is 204696966.

It is a happy number.

669696402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669696407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108483 + ... + 114489.

It is an arithmetic number, because the mean of its divisors is an integer number (44366076).

Almost surely, 2^669696402 is an apocalyptic number.

669696402 is an abundant number, since it is smaller than the sum of its proper divisors (750018030).

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

669696402 is a wasteful number, since it uses less digits than its factorization.

669696402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122.

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 669696402 is about 25878.4930395879. The cubic root of 669696402 is about 874.9018238693.

The spelling of 669696402 in words is "six hundred sixty-nine million, six hundred ninety-six thousand, four hundred two".