664287101 has 8 divisors (see below), whose sum is σ = 699732000. Its totient is φ = 628890480.

The previous prime is 664287083. The next prime is 664287149. The reversal of 664287101 is 101782466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664287101 - 2¹⁸ = 664024957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664287181) 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, 18146 + ... + 40716.

It is an arithmetic number, because the mean of its divisors is an integer number (87466500).

Almost surely, 2^664287101 is an apocalyptic number.

It is an amenable number.

664287101 is a deficient number, since it is larger than the sum of its proper divisors (35444899).

664287101 is a wasteful number, since it uses less digits than its factorization.

664287101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24139.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 664287101 is about 25773.7676912011. The cubic root of 664287101 is about 872.5398546120.

The spelling of 664287101 in words is "six hundred sixty-four million, two hundred eighty-seven thousand, one hundred one".