65572690 has 16 divisors (see below), whose sum is σ = 118167192. Its totient is φ = 26198784.

The previous prime is 65572651. The next prime is 65572691. The reversal of 65572690 is 9627556.

It can be written as a sum of positive squares in 4 ways, for example, as 65141041 + 431649 = 8071^2 + 657^2 .

It is a super-2 number, since 2×65572690² = 8599555347672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65572691) 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, 6682 + ... + 13258.

Almost surely, 2^65572690 is an apocalyptic number.

65572690 is a deficient number, since it is larger than the sum of its proper divisors (52594502).

65572690 is a wasteful number, since it uses less digits than its factorization.

65572690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7581.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 65572690 is about 8097.6965860669. The cubic root of 65572690 is about 403.2499603795.

The spelling of 65572690 in words is "sixty-five million, five hundred seventy-two thousand, six hundred ninety".