64612072 has 32 divisors (see below), whose sum is σ = 138827520. Its totient is φ = 27616320.

The previous prime is 64612069. The next prime is 64612073. The reversal of 64612072 is 27021646.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 64612072.

It is not an unprimeable number, because it can be changed into a prime (64612073) 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, 22798 + ... + 25474.

It is an arithmetic number, because the mean of its divisors is an integer number (4338360).

Almost surely, 2^64612072 is an apocalyptic number.

It is an amenable number.

64612072 is an abundant number, since it is smaller than the sum of its proper divisors (74215448).

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

64612072 is a wasteful number, since it uses less digits than its factorization.

64612072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 64612072 is about 8038.1634718386. The cubic root of 64612072 is about 401.2711064424.

The spelling of 64612072 in words is "sixty-four million, six hundred twelve thousand, seventy-two".