64168572 has 24 divisors (see below), whose sum is σ = 161244496. Its totient is φ = 19744128.

The previous prime is 64168553. The next prime is 64168579. The reversal of 64168572 is 27586146.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 64168572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64168579) 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, 205513 + ... + 205824.

Almost surely, 2^64168572 is an apocalyptic number.

It is an amenable number.

64168572 is an abundant number, since it is smaller than the sum of its proper divisors (97075924).

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

64168572 is a wasteful number, since it uses less digits than its factorization.

64168572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411357 (or 411355 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 64168572 is about 8010.5288214949. The cubic root of 64168572 is about 400.3508837781.

The spelling of 64168572 in words is "sixty-four million, one hundred sixty-eight thousand, five hundred seventy-two".