65722472 has 16 divisors (see below), whose sum is σ = 123520740. Its totient is φ = 32783616.

The previous prime is 65722469. The next prime is 65722487. The reversal of 65722472 is 27422756.

It can be written as a sum of positive squares in 2 ways, for example, as 60124516 + 5597956 = 7754^2 + 2366^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6023 + ... + 12950.

Almost surely, 2^65722472 is an apocalyptic number.

It is an amenable number.

65722472 is a deficient number, since it is larger than the sum of its proper divisors (57798268).

65722472 is a wasteful number, since it uses less digits than its factorization.

65722472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19412 (or 19408 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 65722472 is about 8106.9397432077. The cubic root of 65722472 is about 403.5567631828.

The spelling of 65722472 in words is "sixty-five million, seven hundred twenty-two thousand, four hundred seventy-two".