664051546 has 16 divisors (see below), whose sum is σ = 1002081024. Its totient is φ = 330030864.

The previous prime is 664051519. The next prime is 664051559. The reversal of 664051546 is 645150466.

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 7 ways as a sum of consecutive naturals, for example, 277471 + ... + 279853.

It is an arithmetic number, because the mean of its divisors is an integer number (62630064).

Almost surely, 2^664051546 is an apocalyptic number.

664051546 is a deficient number, since it is larger than the sum of its proper divisors (338029478).

664051546 is a wasteful number, since it uses less digits than its factorization.

664051546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 664051546 is about 25769.1976204150. The cubic root of 664051546 is about 872.4367087364.

The spelling of 664051546 in words is "six hundred sixty-four million, fifty-one thousand, five hundred forty-six".