664280524 has 48 divisors (see below), whose sum is σ = 1237453056. Its totient is φ = 311500800.

The previous prime is 664280471. The next prime is 664280537. The reversal of 664280524 is 425082466.

664280524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×664280524² = 882537229131429152, which contains 22 as substring.

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, 980874 + ... + 981550.

It is an arithmetic number, because the mean of its divisors is an integer number (25780272).

Almost surely, 2^664280524 is an apocalyptic number.

It is an amenable number.

664280524 is a deficient number, since it is larger than the sum of its proper divisors (573172532).

664280524 is a wasteful number, since it uses less digits than its factorization.

664280524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 664280524 is about 25773.6400999160. The cubic root of 664280524 is about 872.5369749768.

The spelling of 664280524 in words is "six hundred sixty-four million, two hundred eighty thousand, five hundred twenty-four".