65728753 has 2 divisors, whose sum is σ = 65728754. Its totient is φ = 65728752.

The previous prime is 65728739. The next prime is 65728759. The reversal of 65728753 is 35782756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 23309584 = 6513^2 + 4828^2 .

It is a cyclic number.

It is not a de Polignac number, because 65728753 - 2²⁵ = 32174321 is a prime.

It is not a weakly prime, because it can be changed into another prime (65728759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32864376 + 32864377.

It is an arithmetic number, because the mean of its divisors is an integer number (32864377).

Almost surely, 2^65728753 is an apocalyptic number.

It is an amenable number.

65728753 is a deficient number, since it is larger than the sum of its proper divisors (1).

65728753 is an equidigital number, since it uses as much as digits as its factorization.

65728753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 65728753 is about 8107.3271181074. The cubic root of 65728753 is about 403.5696185487.

The spelling of 65728753 in words is "sixty-five million, seven hundred twenty-eight thousand, seven hundred fifty-three".