64417572 has 48 divisors (see below), whose sum is σ = 174276480. Its totient is φ = 20538144.

The previous prime is 64417559. The next prime is 64417579. The reversal of 64417572 is 27571446.

64417572 is a `hidden beast` number, since 644 + 1 + 7 + 5 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64417579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10483 + ... + 15450.

It is an arithmetic number, because the mean of its divisors is an integer number (3630760).

Almost surely, 2^64417572 is an apocalyptic number.

It is an amenable number.

64417572 is an abundant number, since it is smaller than the sum of its proper divisors (109858908).

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

64417572 is a wasteful number, since it uses less digits than its factorization.

64417572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25969 (or 25961 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 64417572 is about 8026.0558183955. The cubic root of 64417572 is about 400.8680564987.

The spelling of 64417572 in words is "sixty-four million, four hundred seventeen thousand, five hundred seventy-two".