64530396 has 72 divisors (see below), whose sum is σ = 187684224. Its totient is φ = 18312480.

The previous prime is 64530383. The next prime is 64530397. The reversal of 64530396 is 69303546.

64530396 is a `hidden beast` number, since 645 + 3 + 0 + 3 + 9 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64530396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64530397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40291 + ... + 41861.

Almost surely, 2^64530396 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 64530396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93842112).

64530396 is an abundant number, since it is smaller than the sum of its proper divisors (123153828).

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

64530396 is a wasteful number, since it uses less digits than its factorization.

64530396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 64530396 is about 8033.0813515114. The cubic root of 64530396 is about 401.1019531272.

The spelling of 64530396 in words is "sixty-four million, five hundred thirty thousand, three hundred ninety-six".