665054748 has 18 divisors (see below), whose sum is σ = 1681110704. Its totient is φ = 221684904.

The previous prime is 665054737. The next prime is 665054779. The reversal of 665054748 is 847450566.

665054748 is a `hidden beast` number, since 6 + 65 + 0 + 547 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9236836 + ... + 9236907.

Almost surely, 2^665054748 is an apocalyptic number.

It is an amenable number.

665054748 is an abundant number, since it is smaller than the sum of its proper divisors (1016055956).

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

665054748 is a wasteful number, since it uses less digits than its factorization.

665054748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18473753 (or 18473748 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 665054748 is about 25788.6554127973. The cubic root of 665054748 is about 872.8758261918.

It can be divided in two parts, 66505 and 4748, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 665054748 in words is "six hundred sixty-five million, fifty-four thousand, seven hundred forty-eight".