65072569 has 2 divisors, whose sum is σ = 65072570. Its totient is φ = 65072568.

The previous prime is 65072551. The next prime is 65072573. The reversal of 65072569 is 96527056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 25130169 = 6320^2 + 5013^2 .

It is a cyclic number.

It is not a de Polignac number, because 65072569 - 2²³ = 56683961 is a prime.

It is a super-2 number, since 2×65072569² = 8468878472519522, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (65072509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32536284 + 32536285.

It is an arithmetic number, because the mean of its divisors is an integer number (32536285).

Almost surely, 2^65072569 is an apocalyptic number.

It is an amenable number.

65072569 is a deficient number, since it is larger than the sum of its proper divisors (1).

65072569 is an equidigital number, since it uses as much as digits as its factorization.

65072569 is an evil number, because the sum of its binary digits is even.

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

The square root of 65072569 is about 8066.7570311743. The cubic root of 65072569 is about 402.2221510021. Note that the first 3 decimals are identical.

The spelling of 65072569 in words is "sixty-five million, seventy-two thousand, five hundred sixty-nine".