61636316 has 36 divisors (see below), whose sum is σ = 126336168. Its totient is φ = 26234208.

The previous prime is 61636303. The next prime is 61636319. The reversal of 61636316 is 61363616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61636319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29771 + ... + 31773.

It is an arithmetic number, because the mean of its divisors is an integer number (3509338).

Almost surely, 2^61636316 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 61636316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63168084).

61636316 is an abundant number, since it is smaller than the sum of its proper divisors (64699852).

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

61636316 is a wasteful number, since it uses less digits than its factorization.

61636316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2169 counting only the distinct ones).

The product of its digits is 11664, while the sum is 32.

The square root of 61636316 is about 7850.8799506807. The cubic root of 61636316 is about 395.0137601359.

The spelling of 61636316 in words is "sixty-one million, six hundred thirty-six thousand, three hundred sixteen".