65711256 has 96 divisors (see below), whose sum is σ = 188548560. Its totient is φ = 19009536.

The previous prime is 65711249. The next prime is 65711263. The reversal of 65711256 is 65211756.

It is an interprime number because it is at equal distance from previous prime (65711249) and next prime (65711263).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68476 + ... + 69428.

Almost surely, 2^65711256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65711256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94274280).

65711256 is an abundant number, since it is smaller than the sum of its proper divisors (122837304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65711256 is a wasteful number, since it uses less digits than its factorization.

65711256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 988 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 65711256 is about 8106.2479606782. The cubic root of 65711256 is about 403.5338052810.

Subtracting from 65711256 its reverse (65211756), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 65711256 in words is "sixty-five million, seven hundred eleven thousand, two hundred fifty-six".