65656056 has 64 divisors (see below), whose sum is σ = 170398080. Its totient is φ = 21064320.

The previous prime is 65656049. The next prime is 65656061. The reversal of 65656056 is 65065656.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94671 + ... + 95361.

It is an arithmetic number, because the mean of its divisors is an integer number (2662470).

Almost surely, 2^65656056 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 65656056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85199040).

65656056 is an abundant number, since it is smaller than the sum of its proper divisors (104742024).

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

65656056 is a wasteful number, since it uses less digits than its factorization.

65656056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 65656056 is about 8102.8424642220. The cubic root of 65656056 is about 403.4207789513.

It can be divided in two parts, 6565 and 6056, that added together give a palindrome (12621).

The spelling of 65656056 in words is "sixty-five million, six hundred fifty-six thousand, fifty-six".