64515164 has 36 divisors (see below), whose sum is σ = 132675480. Its totient is φ = 27367200.

The previous prime is 64515131. The next prime is 64515173. The reversal of 64515164 is 46151546.

It is a self number, because there is not a number n which added to its sum of digits gives 64515164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18167 + ... + 21425.

It is an arithmetic number, because the mean of its divisors is an integer number (3685430).

Almost surely, 2^64515164 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 64515164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66337740).

64515164 is an abundant number, since it is smaller than the sum of its proper divisors (68160316).

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

64515164 is a wasteful number, since it uses less digits than its factorization.

64515164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3369 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 64515164 is about 8032.1332160267. The cubic root of 64515164 is about 401.0703914338.

The spelling of 64515164 in words is "sixty-four million, five hundred fifteen thousand, one hundred sixty-four".