669546635 has 16 divisors (see below), whose sum is σ = 853632000. Its totient is φ = 503185536.

The previous prime is 669546623. The next prime is 669546653. The reversal of 669546635 is 536645966.

It is a cyclic number.

It is not a de Polignac number, because 669546635 - 2¹⁸ = 669284491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57035 + ... + 67764.

It is an arithmetic number, because the mean of its divisors is an integer number (53352000).

Almost surely, 2^669546635 is an apocalyptic number.

669546635 is a deficient number, since it is larger than the sum of its proper divisors (184085365).

669546635 is a wasteful number, since it uses less digits than its factorization.

669546635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124870.

The product of its digits is 3499200, while the sum is 50.

The square root of 669546635 is about 25875.5992201147. The cubic root of 669546635 is about 874.8365996921.

The spelling of 669546635 in words is "six hundred sixty-nine million, five hundred forty-six thousand, six hundred thirty-five".