64369512 has 64 divisors (see below), whose sum is σ = 179712000. Its totient is φ = 21347712.

The previous prime is 64369499. The next prime is 64369561. The reversal of 64369512 is 21596346.

It is a happy number.

64369512 is a `hidden beast` number, since 643 + 6 + 9 + 5 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49689 + ... + 50967.

It is an arithmetic number, because the mean of its divisors is an integer number (2808000).

Almost surely, 2^64369512 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 64369512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89856000).

64369512 is an abundant number, since it is smaller than the sum of its proper divisors (115342488).

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

64369512 is a wasteful number, since it uses less digits than its factorization.

64369512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1517 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 64369512 is about 8023.0612611397. The cubic root of 64369512 is about 400.7683398564.

The spelling of 64369512 in words is "sixty-four million, three hundred sixty-nine thousand, five hundred twelve".