65253889 has 4 divisors (see below), whose sum is σ = 65325060. Its totient is φ = 65182720.

The previous prime is 65253863. The next prime is 65253893. The reversal of 65253889 is 98835256.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36180225 + 29073664 = 6015^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 65253889 - 2⁷ = 65253761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65253989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34192 + ... + 36049.

It is an arithmetic number, because the mean of its divisors is an integer number (16331265).

Almost surely, 2^65253889 is an apocalyptic number.

It is an amenable number.

65253889 is a deficient number, since it is larger than the sum of its proper divisors (71171).

65253889 is an equidigital number, since it uses as much as digits as its factorization.

65253889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71170.

The product of its digits is 518400, while the sum is 46.

The square root of 65253889 is about 8077.9879301717. The cubic root of 65253889 is about 402.5953921763.

The spelling of 65253889 in words is "sixty-five million, two hundred fifty-three thousand, eight hundred eighty-nine".