64722450 has 48 divisors (see below), whose sum is σ = 172863936. Its totient is φ = 15931200.

The previous prime is 64722443. The next prime is 64722473. The reversal of 64722450 is 5422746.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14646 + ... + 18545.

It is an arithmetic number, because the mean of its divisors is an integer number (3601332).

Almost surely, 2^64722450 is an apocalyptic number.

64722450 is an abundant number, since it is smaller than the sum of its proper divisors (108141486).

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

64722450 is a wasteful number, since it uses less digits than its factorization.

64722450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33219 (or 33214 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 64722450 is about 8045.0264138783. The cubic root of 64722450 is about 401.4994760716.

The spelling of 64722450 in words is "sixty-four million, seven hundred twenty-two thousand, four hundred fifty".