665014040 has 64 divisors (see below), whose sum is σ = 1520285760. Its totient is φ = 261775360.

The previous prime is 665014039. The next prime is 665014069. The reversal of 665014040 is 40410566.

It is a happy number.

665014040 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, 754400 + ... + 755280.

It is an arithmetic number, because the mean of its divisors is an integer number (23754465).

Almost surely, 2^665014040 is an apocalyptic number.

It is an amenable number.

665014040 is an abundant number, since it is smaller than the sum of its proper divisors (855271720).

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

665014040 is a wasteful number, since it uses less digits than its factorization.

665014040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 665014040 is about 25787.8661389422. The cubic root of 665014040 is about 872.8580162525.

The spelling of 665014040 in words is "six hundred sixty-five million, fourteen thousand, forty".