61136608 has 48 divisors (see below), whose sum is σ = 130331376. Its totient is φ = 28062720.

The previous prime is 61136597. The next prime is 61136627. The reversal of 61136608 is 80663116.

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 61136608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116635 + ... + 117157.

It is an arithmetic number, because the mean of its divisors is an integer number (2715237).

Almost surely, 2^61136608 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 61136608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65165688).

61136608 is an abundant number, since it is smaller than the sum of its proper divisors (69194768).

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

61136608 is a wasteful number, since it uses less digits than its factorization.

61136608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 61136608 is about 7818.9902161341. The cubic root of 61136608 is about 393.9433555095.

It can be divided in two parts, 6113 and 6608, that added together give a palindrome (12721).

The spelling of 61136608 in words is "sixty-one million, one hundred thirty-six thousand, six hundred eight".