65064978 has 32 divisors (see below), whose sum is σ = 157734720. Its totient is φ = 19716480.

The previous prime is 65064959. The next prime is 65064983. The reversal of 65064978 is 87946056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54175 + ... + 55362.

It is an arithmetic number, because the mean of its divisors is an integer number (4929210).

Almost surely, 2^65064978 is an apocalyptic number.

65064978 is an abundant number, since it is smaller than the sum of its proper divisors (92669742).

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

65064978 is a wasteful number, since it uses less digits than its factorization.

65064978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109559 (or 109553 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 65064978 is about 8066.2865061935. The cubic root of 65064978 is about 402.2065100691.

The spelling of 65064978 in words is "sixty-five million, sixty-four thousand, nine hundred seventy-eight".