664214169 has 8 divisors (see below), whose sum is σ = 885892032. Its totient is φ = 442672880.

The previous prime is 664214167. The next prime is 664214183. The reversal of 664214169 is 961412466.

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 664214169 - 2¹ = 664214167 is a prime.

It is a super-2 number, since 2×664214169² = 882360924600721122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664214167) 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, 22197 + ... + 42674.

It is an arithmetic number, because the mean of its divisors is an integer number (110736504).

Almost surely, 2^664214169 is an apocalyptic number.

It is an amenable number.

664214169 is a deficient number, since it is larger than the sum of its proper divisors (221677863).

664214169 is a wasteful number, since it uses less digits than its factorization.

664214169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68287.

The product of its digits is 62208, while the sum is 39.

The square root of 664214169 is about 25772.3528029553. The cubic root of 664214169 is about 872.5079214285.

The spelling of 664214169 in words is "six hundred sixty-four million, two hundred fourteen thousand, one hundred sixty-nine".