64866744 has 40 divisors (see below), whose sum is σ = 181688760. Its totient is φ = 21622032.

The previous prime is 64866743. The next prime is 64866757. The reversal of 64866744 is 44766846.

It is a self number, because there is not a number n which added to its sum of digits gives 64866744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64866743) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 49404 + ... + 50699.

It is an arithmetic number, because the mean of its divisors is an integer number (4542219).

Almost surely, 2^64866744 is an apocalyptic number.

It is an amenable number.

64866744 is an abundant number, since it is smaller than the sum of its proper divisors (116822016).

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

64866744 is a wasteful number, since it uses less digits than its factorization.

64866744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100121 (or 100108 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 64866744 is about 8053.9893220689. The cubic root of 64866744 is about 401.7976259173.

The spelling of 64866744 in words is "sixty-four million, eight hundred sixty-six thousand, seven hundred forty-four".