664197101 has 8 divisors (see below), whose sum is σ = 683124480. Its totient is φ = 645321168.

The previous prime is 664197067. The next prime is 664197133. The reversal of 664197101 is 101791466.

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 664197101 - 2²² = 660002797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664197181) 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, 14120 + ... + 39086.

It is an arithmetic number, because the mean of its divisors is an integer number (85390560).

Almost surely, 2^664197101 is an apocalyptic number.

It is an amenable number.

664197101 is a deficient number, since it is larger than the sum of its proper divisors (18927379).

664197101 is a wasteful number, since it uses less digits than its factorization.

664197101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25723.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 664197101 is about 25772.0216707964. The cubic root of 664197101 is about 872.5004478888.

The spelling of 664197101 in words is "six hundred sixty-four million, one hundred ninety-seven thousand, one hundred one".