64987075 has 12 divisors (see below), whose sum is σ = 84088368. Its totient is φ = 49728800.

The previous prime is 64987051. The next prime is 64987079. The reversal of 64987075 is 57078946.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64987075 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64987079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55936 + ... + 57085.

It is an arithmetic number, because the mean of its divisors is an integer number (7007364).

Almost surely, 2^64987075 is an apocalyptic number.

64987075 is a deficient number, since it is larger than the sum of its proper divisors (19101293).

64987075 is a wasteful number, since it uses less digits than its factorization.

64987075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113054 (or 113049 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 64987075 is about 8061.4561339748. The cubic root of 64987075 is about 402.0459238972.

The spelling of 64987075 in words is "sixty-four million, nine hundred eighty-seven thousand, seventy-five".