65656536 has 96 divisors (see below), whose sum is σ = 188455680. Its totient is φ = 19011520.

The previous prime is 65656529. The next prime is 65656553. The reversal of 65656536 is 63565656.

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, 66301 + ... + 67283.

It is an arithmetic number, because the mean of its divisors is an integer number (1963080).

Almost surely, 2^65656536 is an apocalyptic number.

65656536 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65656536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94227840).

65656536 is an abundant number, since it is smaller than the sum of its proper divisors (122799144).

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

65656536 is a wasteful number, since it uses less digits than its factorization.

65656536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1022 counting only the distinct ones).

The product of its digits is 486000, while the sum is 42.

The square root of 65656536 is about 8102.8720834035. The cubic root of 65656536 is about 403.4217620619.

The spelling of 65656536 in words is "sixty-five million, six hundred fifty-six thousand, five hundred thirty-six".