65724471 has 12 divisors (see below), whose sum is σ = 96955872. Its totient is φ = 42883776.

The previous prime is 65724457. The next prime is 65724473. The reversal of 65724471 is 17442756.

It is not a de Polignac number, because 65724471 - 2¹⁴ = 65708087 is a prime.

It is a super-3 number, since 3×65724471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 77266 + ... + 78111.

It is an arithmetic number, because the mean of its divisors is an integer number (8079656).

Almost surely, 2^65724471 is an apocalyptic number.

65724471 is a deficient number, since it is larger than the sum of its proper divisors (31231401).

65724471 is a wasteful number, since it uses less digits than its factorization.

65724471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155430 (or 155427 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 65724471 is about 8107.0630317027. The cubic root of 65724471 is about 403.5608546387.

The spelling of 65724471 in words is "sixty-five million, seven hundred twenty-four thousand, four hundred seventy-one".