64422878 has 16 divisors (see below), whose sum is σ = 106033536. Its totient is φ = 29172000.

The previous prime is 64422851. The next prime is 64422887. The reversal of 64422878 is 87822446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21998 + ... + 24753.

It is an arithmetic number, because the mean of its divisors is an integer number (6627096).

Almost surely, 2^64422878 is an apocalyptic number.

64422878 is a deficient number, since it is larger than the sum of its proper divisors (41610658).

64422878 is a wasteful number, since it uses less digits than its factorization.

64422878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46819.

The product of its digits is 172032, while the sum is 41.

The square root of 64422878 is about 8026.3863600004. The cubic root of 64422878 is about 400.8790625408.

The spelling of 64422878 in words is "sixty-four million, four hundred twenty-two thousand, eight hundred seventy-eight".