64740576 has 48 divisors (see below), whose sum is σ = 170375184. Its totient is φ = 21525504.

The previous prime is 64740563. The next prime is 64740587. The reversal of 64740576 is 67504746.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 58686 + ... + 59778.

It is an arithmetic number, because the mean of its divisors is an integer number (3549483).

Almost surely, 2^64740576 is an apocalyptic number.

It is an amenable number.

64740576 is an abundant number, since it is smaller than the sum of its proper divisors (105634608).

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

64740576 is a wasteful number, since it uses less digits than its factorization.

64740576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 64740576 is about 8046.1528695396. The cubic root of 64740576 is about 401.5369535374.

The spelling of 64740576 in words is "sixty-four million, seven hundred forty thousand, five hundred seventy-six".