64979874 has 16 divisors (see below), whose sum is σ = 144399840. Its totient is φ = 21659940.

The previous prime is 64979869. The next prime is 64979891. The reversal of 64979874 is 47897946.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1203331 = 64979874 / (6 + 4 + 9 + 7 + 9 + 8 + 7 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 64979874.

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, 601612 + ... + 601719.

It is an arithmetic number, because the mean of its divisors is an integer number (9024990).

Almost surely, 2^64979874 is an apocalyptic number.

64979874 is an abundant number, since it is smaller than the sum of its proper divisors (79419966).

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

64979874 is a wasteful number, since it uses less digits than its factorization.

64979874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203342 (or 1203336 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 64979874 is about 8061.0094901321. The cubic root of 64979874 is about 402.0310735615.

The spelling of 64979874 in words is "sixty-four million, nine hundred seventy-nine thousand, eight hundred seventy-four".