664601614364 has 24 divisors (see below), whose sum is σ = 1169291870208. Its totient is φ = 330518669360.

The previous prime is 664601614361. The next prime is 664601614373. The reversal of 664601614364 is 463416106466.

It is a happy number.

It is a super-2 number, since 2×664601614364² (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 (664601614361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6402017 + ... + 6504999.

It is an arithmetic number, because the mean of its divisors is an integer number (48720494592).

Almost surely, 2^664601614364 is an apocalyptic number.

It is an amenable number.

664601614364 is a deficient number, since it is larger than the sum of its proper divisors (504690255844).

664601614364 is a wasteful number, since it uses less digits than its factorization.

664601614364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111625 (or 111623 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 664601614364 in words is "six hundred sixty-four billion, six hundred one million, six hundred fourteen thousand, three hundred sixty-four".