65256311 has 4 divisors (see below), whose sum is σ = 65688624. Its totient is φ = 64824000.

The previous prime is 65256307. The next prime is 65256329. The reversal of 65256311 is 11365256.

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

It is a cyclic number.

It is not a de Polignac number, because 65256311 - 2² = 65256307 is a prime.

It is a super-2 number, since 2×65256311² = 8516772250657442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65256361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215930 + ... + 216231.

It is an arithmetic number, because the mean of its divisors is an integer number (16422156).

Almost surely, 2^65256311 is an apocalyptic number.

65256311 is a deficient number, since it is larger than the sum of its proper divisors (432313).

65256311 is a wasteful number, since it uses less digits than its factorization.

65256311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432312.

The product of its digits is 5400, while the sum is 29.

The square root of 65256311 is about 8078.1378423496. The cubic root of 65256311 is about 402.6003731002.

The spelling of 65256311 in words is "sixty-five million, two hundred fifty-six thousand, three hundred eleven".