64877138 has 8 divisors (see below), whose sum is σ = 98016240. Its totient is φ = 32205060.

The previous prime is 64877119. The next prime is 64877149. The reversal of 64877138 is 83177846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116408 + ... + 116963.

It is an arithmetic number, because the mean of its divisors is an integer number (12252030).

Almost surely, 2^64877138 is an apocalyptic number.

64877138 is a deficient number, since it is larger than the sum of its proper divisors (33139102).

64877138 is a wasteful number, since it uses less digits than its factorization.

64877138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233512.

The product of its digits is 225792, while the sum is 44.

The square root of 64877138 is about 8054.6345665089. The cubic root of 64877138 is about 401.8190856116.

The spelling of 64877138 in words is "sixty-four million, eight hundred seventy-seven thousand, one hundred thirty-eight".