664264086 has 32 divisors (see below), whose sum is σ = 1439399808. Its totient is φ = 203548800.

The previous prime is 664264057. The next prime is 664264141. The reversal of 664264086 is 680462466.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 71340 + ... + 80111.

It is an arithmetic number, because the mean of its divisors is an integer number (44981244).

Almost surely, 2^664264086 is an apocalyptic number.

664264086 is an abundant number, since it is smaller than the sum of its proper divisors (775135722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664264086 is a wasteful number, since it uses less digits than its factorization.

664264086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151516.

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 664264086 is about 25773.3212062396. The cubic root of 664264086 is about 872.5297777759.

The spelling of 664264086 in words is "six hundred sixty-four million, two hundred sixty-four thousand, eighty-six".