64515330 has 48 divisors (see below), whose sum is σ = 182991744. Its totient is φ = 15639840.

The previous prime is 64515313. The next prime is 64515397. The reversal of 64515330 is 3351546.

64515330 is a `hidden beast` number, since 645 + 15 + 3 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64515294 and 64515303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31594 + ... + 33573.

It is an arithmetic number, because the mean of its divisors is an integer number (3812328).

Almost surely, 2^64515330 is an apocalyptic number.

64515330 is an abundant number, since it is smaller than the sum of its proper divisors (118476414).

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

64515330 is a wasteful number, since it uses less digits than its factorization.

64515330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65191 (or 65188 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 64515330 is about 8032.1435495140. The cubic root of 64515330 is about 401.0707354234.

Adding to 64515330 its reverse (3351546), we get a palindrome (67866876).

It can be divided in two parts, 6451 and 5330, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 64515330 in words is "sixty-four million, five hundred fifteen thousand, three hundred thirty".