664310564 has 48 divisors (see below), whose sum is σ = 1290038400. Its totient is φ = 297724416.

The previous prime is 664310539. The next prime is 664310567. The reversal of 664310564 is 465013466.

It is not an unprimeable number, because it can be changed into a prime (664310567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419927 + ... + 421505.

It is an arithmetic number, because the mean of its divisors is an integer number (26875800).

Almost surely, 2^664310564 is an apocalyptic number.

It is an amenable number.

664310564 is a deficient number, since it is larger than the sum of its proper divisors (625727836).

664310564 is a wasteful number, since it uses less digits than its factorization.

664310564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 664310564 is about 25774.2228592833. Note that the first 3 decimals coincide. The cubic root of 664310564 is about 872.5501273598.

The spelling of 664310564 in words is "six hundred sixty-four million, three hundred ten thousand, five hundred sixty-four".