669271048 has 64 divisors (see below), whose sum is σ = 1377000000. Its totient is φ = 303738624.

The previous prime is 669271033. The next prime is 669271069. The reversal of 669271048 is 840172966.

It is a junction number, because it is equal to n+sod(n) for n = 669270995 and 669271013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656283 + ... + 657301.

It is an arithmetic number, because the mean of its divisors is an integer number (21515625).

Almost surely, 2^669271048 is an apocalyptic number.

It is an amenable number.

669271048 is an abundant number, since it is smaller than the sum of its proper divisors (707728952).

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

669271048 is a wasteful number, since it uses less digits than its factorization.

669271048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 669271048 is about 25870.2734426987. The cubic root of 669271048 is about 874.7165549398.

The spelling of 669271048 in words is "six hundred sixty-nine million, two hundred seventy-one thousand, forty-eight".