669549048 has 64 divisors (see below), whose sum is σ = 1936085760. Its totient is φ = 188990976.

The previous prime is 669549031. The next prime is 669549059. The reversal of 669549048 is 840945966.

669549048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 10065 + ... + 37952.

It is an arithmetic number, because the mean of its divisors is an integer number (30251340).

Almost surely, 2^669549048 is an apocalyptic number.

It is an amenable number.

669549048 is an abundant number, since it is smaller than the sum of its proper divisors (1266536712).

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

669549048 is a wasteful number, since it uses less digits than its factorization.

669549048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48116 (or 48112 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 669549048 is about 25875.6458470122. The cubic root of 669549048 is about 874.8376506411.

The spelling of 669549048 in words is "six hundred sixty-nine million, five hundred forty-nine thousand, forty-eight".