61534656 has 84 divisors (see below), whose sum is σ = 180209952. Its totient is φ = 20066304.

The previous prime is 61534631. The next prime is 61534667. The reversal of 61534656 is 65643516.

61534656 is a `hidden beast` number, since 61 + 534 + 65 + 6 = 666.

61534656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 61534656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25936 + ... + 28208.

Almost surely, 2^61534656 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 61534656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90104976).

61534656 is an abundant number, since it is smaller than the sum of its proper divisors (118675296).

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

61534656 is a wasteful number, since it uses less digits than its factorization.

61534656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338 (or 2325 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 61534656 is about 7844.4028453414. The cubic root of 61534656 is about 394.7964683430.

It can be divided in two parts, 61534 and 656, that multiplied together give a palindrome (40366304).

The spelling of 61534656 in words is "sixty-one million, five hundred thirty-four thousand, six hundred fifty-six".