65992164 has 96 divisors (see below), whose sum is σ = 191520000. Its totient is φ = 17252352.

The previous prime is 65992159. The next prime is 65992177. The reversal of 65992164 is 46129956.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 52212 + ... + 53460.

It is an arithmetic number, because the mean of its divisors is an integer number (1995000).

Almost surely, 2^65992164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65992164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95760000).

65992164 is an abundant number, since it is smaller than the sum of its proper divisors (125527836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65992164 is a wasteful number, since it uses less digits than its factorization.

65992164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1315 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 65992164 is about 8123.5561178587. The cubic root of 65992164 is about 404.1080079157.

The spelling of 65992164 in words is "sixty-five million, nine hundred ninety-two thousand, one hundred sixty-four".