64942272 has 84 divisors (see below), whose sum is σ = 192202816. Its totient is φ = 20943360.

The previous prime is 64942211. The next prime is 64942279. The reversal of 64942272 is 27224946.

64942272 is a `hidden beast` number, since 649 + 4 + 2 + 2 + 7 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (64942279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16038 + ... + 19674.

Almost surely, 2^64942272 is an apocalyptic number.

64942272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64942272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96101408).

64942272 is an abundant number, since it is smaller than the sum of its proper divisors (127260544).

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

64942272 is a wasteful number, since it uses less digits than its factorization.

64942272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686 (or 3673 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 64942272 is about 8058.6768144653. The cubic root of 64942272 is about 401.9535106260.

The spelling of 64942272 in words is "sixty-four million, nine hundred forty-two thousand, two hundred seventy-two".