64979574 has 16 divisors (see below), whose sum is σ = 141773760. Its totient is φ = 19690760.

The previous prime is 64979573. The next prime is 64979599. The reversal of 64979574 is 47597946.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64979573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492204 + ... + 492335.

It is an arithmetic number, because the mean of its divisors is an integer number (8860860).

Almost surely, 2^64979574 is an apocalyptic number.

64979574 is an abundant number, since it is smaller than the sum of its proper divisors (76794186).

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

64979574 is a wasteful number, since it uses less digits than its factorization.

64979574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984555.

The product of its digits is 1905120, while the sum is 51.

The square root of 64979574 is about 8060.9908820194. The cubic root of 64979574 is about 402.0304548596.

The spelling of 64979574 in words is "sixty-four million, nine hundred seventy-nine thousand, five hundred seventy-four".