65724969 has 8 divisors (see below), whose sum is σ = 88537120. Its totient is φ = 43364736.

The previous prime is 65724959. The next prime is 65724973. The reversal of 65724969 is 96942756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65724969 - 2⁹ = 65724457 is a prime.

It is a super-2 number, since 2×65724969² = 8639543100101922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65724959) 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, 112639 + ... + 113220.

It is an arithmetic number, because the mean of its divisors is an integer number (11067140).

Almost surely, 2^65724969 is an apocalyptic number.

It is an amenable number.

65724969 is a deficient number, since it is larger than the sum of its proper divisors (22812151).

65724969 is a wasteful number, since it uses less digits than its factorization.

65724969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225959.

The product of its digits is 816480, while the sum is 48.

The square root of 65724969 is about 8107.0937456033. The cubic root of 65724969 is about 403.5618739079.

The spelling of 65724969 in words is "sixty-five million, seven hundred twenty-four thousand, nine hundred sixty-nine".