64452915 has 40 divisors (see below), whose sum is σ = 118256688. Its totient is φ = 33566400.

The previous prime is 64452901. The next prime is 64452919. The reversal of 64452915 is 51925446.

64452915 is a `hidden beast` number, since 644 + 5 + 2 + 9 + 1 + 5 = 666.

It is not a de Polignac number, because 64452915 - 2⁶ = 64452851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64452915.

It is not an unprimeable number, because it can be changed into a prime (64452919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15565 + ... + 19265.

Almost surely, 2^64452915 is an apocalyptic number.

64452915 is a deficient number, since it is larger than the sum of its proper divisors (53803773).

64452915 is a wasteful number, since it uses less digits than its factorization.

64452915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761 (or 3752 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 64452915 is about 8028.2572828728. The cubic root of 64452915 is about 400.9413558019.

The spelling of 64452915 in words is "sixty-four million, four hundred fifty-two thousand, nine hundred fifteen".