402375664 has 20 divisors (see below), whose sum is σ = 783648256. Its totient is φ = 200143872.

The previous prime is 402375661. The next prime is 402375697. The reversal of 402375664 is 466573204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402375661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62064 + ... + 68239.

Almost surely, 2^402375664 is an apocalyptic number.

It is an amenable number.

402375664 is a deficient number, since it is larger than the sum of its proper divisors (381272592).

402375664 is a wasteful number, since it uses less digits than its factorization.

402375664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130504 (or 130498 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 402375664 is about 20059.3036768478. The cubic root of 402375664 is about 738.2620916280.

The spelling of 402375664 in words is "four hundred two million, three hundred seventy-five thousand, six hundred sixty-four".