64538475 has 12 divisors (see below), whose sum is σ = 106703736. Its totient is φ = 34420480.

The previous prime is 64538449. The next prime is 64538489. The reversal of 64538475 is 57483546.

It is not a de Polignac number, because 64538475 - 2¹⁶ = 64472939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430182 + ... + 430331.

It is an arithmetic number, because the mean of its divisors is an integer number (8891978).

Almost surely, 2^64538475 is an apocalyptic number.

64538475 is a deficient number, since it is larger than the sum of its proper divisors (42165261).

64538475 is a wasteful number, since it uses less digits than its factorization.

64538475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860526 (or 860521 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 64538475 is about 8033.5841938701. The cubic root of 64538475 is about 401.1186913243.

The spelling of 64538475 in words is "sixty-four million, five hundred thirty-eight thousand, four hundred seventy-five".