64872678 has 24 divisors (see below), whose sum is σ = 140495688. Its totient is φ = 19960512.

The previous prime is 64872671. The next prime is 64872679. The reversal of 64872678 is 87627846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64872671) 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, 30975 + ... + 33002.

It is an arithmetic number, because the mean of its divisors is an integer number (5853987).

Almost surely, 2^64872678 is an apocalyptic number.

64872678 is an abundant number, since it is smaller than the sum of its proper divisors (75623010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64872678 is a wasteful number, since it uses less digits than its factorization.

64872678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64008 (or 63995 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 64872678 is about 8054.3577025111. The cubic root of 64872678 is about 401.8098776726.

The spelling of 64872678 in words is "sixty-four million, eight hundred seventy-two thousand, six hundred seventy-eight".