64511475 has 48 divisors (see below), whose sum is σ = 123182592. Its totient is φ = 29180160.

The previous prime is 64511467. The next prime is 64511521. The reversal of 64511475 is 57411546.

It is not a de Polignac number, because 64511475 - 2³ = 64511467 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 53479 + ... + 54671.

It is an arithmetic number, because the mean of its divisors is an integer number (2566304).

Almost surely, 2^64511475 is an apocalyptic number.

64511475 is a deficient number, since it is larger than the sum of its proper divisors (58671117).

64511475 is a wasteful number, since it uses less digits than its factorization.

64511475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1311 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 64511475 is about 8031.9035726283. The cubic root of 64511475 is about 401.0627468389.

The spelling of 64511475 in words is "sixty-four million, five hundred eleven thousand, four hundred seventy-five".