64734372 has 18 divisors (see below), whose sum is σ = 163634198. Its totient is φ = 21578112.

The previous prime is 64734361. The next prime is 64734389. The reversal of 64734372 is 27343746.

It is a happy number.

64734372 is a `hidden beast` number, since 647 + 3 + 4 + 3 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34857216 + 29877156 = 5904^2 + 5466^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1798177 = 64734372 / (6 + 4 + 7 + 3 + 4 + 3 + 7 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 899053 + ... + 899124.

Almost surely, 2^64734372 is an apocalyptic number.

It is an amenable number.

64734372 is an abundant number, since it is smaller than the sum of its proper divisors (98899826).

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

64734372 is a wasteful number, since it uses less digits than its factorization.

64734372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798187 (or 1798182 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The square root of 64734372 is about 8045.7673344436. The cubic root of 64734372 is about 401.5241268838.

The spelling of 64734372 in words is "sixty-four million, seven hundred thirty-four thousand, three hundred seventy-two".