664583438701 has 64 divisors (see below), whose sum is σ = 889597513728. Its totient is φ = 481533631488.

The previous prime is 664583438693. The next prime is 664583438707. The reversal of 664583438701 is 107834385466.

It is not a de Polignac number, because 664583438701 - 2³ = 664583438693 is a prime.

It is a super-2 number, since 2×664583438701² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664583438707) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17476030 + ... + 17514016.

It is an arithmetic number, because the mean of its divisors is an integer number (13899961152).

Almost surely, 2^664583438701 is an apocalyptic number.

It is an amenable number.

664583438701 is a deficient number, since it is larger than the sum of its proper divisors (225014075027).

664583438701 is a wasteful number, since it uses less digits than its factorization.

664583438701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38330.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 664583438701 in words is "six hundred sixty-four billion, five hundred eighty-three million, four hundred thirty-eight thousand, seven hundred one".