669268677 has 32 divisors (see below), whose sum is σ = 1118767104. Its totient is φ = 345729600.

The previous prime is 669268667. The next prime is 669268679. The reversal of 669268677 is 776862966.

It is a happy number.

It is not a de Polignac number, because 669268677 - 2⁴ = 669268661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669268679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33808 + ... + 49814.

It is an arithmetic number, because the mean of its divisors is an integer number (34961472).

Almost surely, 2^669268677 is an apocalyptic number.

It is an amenable number.

669268677 is a deficient number, since it is larger than the sum of its proper divisors (449498427).

669268677 is a wasteful number, since it uses less digits than its factorization.

669268677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16209.

The product of its digits is 9144576, while the sum is 57.

The square root of 669268677 is about 25870.2276178622. The cubic root of 669268677 is about 874.7155219974.

The spelling of 669268677 in words is "six hundred sixty-nine million, two hundred sixty-eight thousand, six hundred seventy-seven".