664101305 has 32 divisors (see below), whose sum is σ = 962288640. Its totient is φ = 430295040.

The previous prime is 664101257. The next prime is 664101323. The reversal of 664101305 is 503101466.

It is not a de Polignac number, because 664101305 - 2²⁰ = 663052729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40745 + ... + 54665.

It is an arithmetic number, because the mean of its divisors is an integer number (30071520).

Almost surely, 2^664101305 is an apocalyptic number.

It is an amenable number.

664101305 is a deficient number, since it is larger than the sum of its proper divisors (298187335).

664101305 is a wasteful number, since it uses less digits than its factorization.

664101305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14009.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 664101305 is about 25770.1630767056. The cubic root of 664101305 is about 872.4584994615.

The spelling of 664101305 in words is "six hundred sixty-four million, one hundred one thousand, three hundred five".