64754978 has 8 divisors (see below), whose sum is σ = 98778960. Its totient is φ = 31828660.

The previous prime is 64754971. The next prime is 64754981. The reversal of 64754978 is 87945746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (64754971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274268 + ... + 274503.

It is an arithmetic number, because the mean of its divisors is an integer number (12347370).

Almost surely, 2^64754978 is an apocalyptic number.

64754978 is a deficient number, since it is larger than the sum of its proper divisors (34023982).

64754978 is a wasteful number, since it uses less digits than its factorization.

64754978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548832.

The product of its digits is 1693440, while the sum is 50.

The square root of 64754978 is about 8047.0477816402. The cubic root of 64754978 is about 401.5667262436.

The spelling of 64754978 in words is "sixty-four million, seven hundred fifty-four thousand, nine hundred seventy-eight".