64785075 has 12 divisors (see below), whose sum is σ = 107111448. Its totient is φ = 34552000.

The previous prime is 64785073. The next prime is 64785107. The reversal of 64785075 is 57058746.

It is not a de Polignac number, because 64785075 - 2¹ = 64785073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64785073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431826 + ... + 431975.

It is an arithmetic number, because the mean of its divisors is an integer number (8925954).

Almost surely, 2^64785075 is an apocalyptic number.

64785075 is a deficient number, since it is larger than the sum of its proper divisors (42326373).

64785075 is a wasteful number, since it uses less digits than its factorization.

64785075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863814 (or 863809 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 64785075 is about 8048.9176290977. The cubic root of 64785075 is about 401.6289303766.

The spelling of 64785075 in words is "sixty-four million, seven hundred eighty-five thousand, seventy-five".