64861675 has 12 divisors (see below), whose sum is σ = 81212560. Its totient is φ = 51383520.

The previous prime is 64861651. The next prime is 64861697. The reversal of 64861675 is 57616846.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64861675 is a prime.

It is an unprimeable number.

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, 10020 + ... + 15169.

Almost surely, 2^64861675 is an apocalyptic number.

64861675 is a deficient number, since it is larger than the sum of its proper divisors (16350885).

64861675 is a wasteful number, since it uses less digits than its factorization.

64861675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25302 (or 25297 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 64861675 is about 8053.6746271500. The cubic root of 64861675 is about 401.7871595104.

It can be divided in two parts, 64861 and 675, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 64861675 in words is "sixty-four million, eight hundred sixty-one thousand, six hundred seventy-five".