64878674 has 8 divisors (see below), whose sum is σ = 111220608. Its totient is φ = 27805140.

The previous prime is 64878661. The next prime is 64878683. The reversal of 64878674 is 47687846.

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, 2317082 + ... + 2317109.

It is an arithmetic number, because the mean of its divisors is an integer number (13902576).

Almost surely, 2^64878674 is an apocalyptic number.

64878674 is a deficient number, since it is larger than the sum of its proper divisors (46341934).

64878674 is a wasteful number, since it uses less digits than its factorization.

64878674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634200.

The product of its digits is 1806336, while the sum is 50.

The square root of 64878674 is about 8054.7299147768. The cubic root of 64878674 is about 401.8222566785.

The spelling of 64878674 in words is "sixty-four million, eight hundred seventy-eight thousand, six hundred seventy-four".