64878056 has 32 divisors (see below), whose sum is σ = 125400000. Its totient is φ = 31449600.

The previous prime is 64878049. The next prime is 64878061. The reversal of 64878056 is 65087846.

It is a junction number, because it is equal to n+sod(n) for n = 64877998 and 64878016.

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, 51320 + ... + 52568.

It is an arithmetic number, because the mean of its divisors is an integer number (3918750).

Almost surely, 2^64878056 is an apocalyptic number.

It is an amenable number.

64878056 is a deficient number, since it is larger than the sum of its proper divisors (60521944).

64878056 is a wasteful number, since it uses less digits than its factorization.

64878056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 64878056 is about 8054.6915521328. The cubic root of 64878056 is about 401.8209808256.

The spelling of 64878056 in words is "sixty-four million, eight hundred seventy-eight thousand, fifty-six".