664862540070 has 32 divisors (see below), whose sum is σ = 1595824908768. Its totient is φ = 177279475968.

The previous prime is 664862540063. The next prime is 664862540081. The reversal of 664862540070 is 70045268466.

It is a congruent number.

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, 759199 + ... + 1380618.

It is an arithmetic number, because the mean of its divisors is an integer number (49869528399).

Almost surely, 2^664862540070 is an apocalyptic number.

664862540070 is an abundant number, since it is smaller than the sum of its proper divisors (930962368698).

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

664862540070 is a wasteful number, since it uses less digits than its factorization.

664862540070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150184.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 664862540070 in words is "six hundred sixty-four billion, eight hundred sixty-two million, five hundred forty thousand, seventy".