65724475 has 6 divisors (see below), whose sum is σ = 81498380. Its totient is φ = 52579560.

The previous prime is 65724473. The next prime is 65724479. The reversal of 65724475 is 57442756.

It is not a de Polignac number, because 65724475 - 2¹ = 65724473 is a prime.

It is a super-2 number, since 2×65724475² = 8639413228051250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65724473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1314465 + ... + 1314514.

Almost surely, 2^65724475 is an apocalyptic number.

65724475 is a deficient number, since it is larger than the sum of its proper divisors (15773905).

65724475 is a wasteful number, since it uses less digits than its factorization.

65724475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628989 (or 2628984 counting only the distinct ones).

The product of its digits is 235200, while the sum is 40.

The square root of 65724475 is about 8107.0632784011. The cubic root of 65724475 is about 403.5608628256.

The spelling of 65724475 in words is "sixty-five million, seven hundred twenty-four thousand, four hundred seventy-five".