664365430 has 16 divisors (see below), whose sum is σ = 1199635920. Its totient is φ = 264906592.

The previous prime is 664365407. The next prime is 664365467. The reversal of 664365430 is 34563466.

It is a self number, because there is not a number n which added to its sum of digits gives 664365430.

It is a congruent number.

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, 101620 + ... + 107959.

It is an arithmetic number, because the mean of its divisors is an integer number (74977245).

Almost surely, 2^664365430 is an apocalyptic number.

664365430 is a deficient number, since it is larger than the sum of its proper divisors (535270490).

664365430 is a wasteful number, since it uses less digits than its factorization.

664365430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209903.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 664365430 is about 25775.2871952962. The cubic root of 664365430 is about 872.5741482620.

The spelling of 664365430 in words is "six hundred sixty-four million, three hundred sixty-five thousand, four hundred thirty".