61318700 has 72 divisors (see below), whose sum is σ = 142699200. Its totient is φ = 22800960.

The previous prime is 61318693. The next prime is 61318703. The reversal of 61318700 is 781316.

It is a self number, because there is not a number n which added to its sum of digits gives 61318700.

It is not an unprimeable number, because it can be changed into a prime (61318703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111827 + ... + 112373.

Almost surely, 2^61318700 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 61318700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71349600).

61318700 is an abundant number, since it is smaller than the sum of its proper divisors (81380500).

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

61318700 is a wasteful number, since it uses less digits than its factorization.

61318700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 61318700 is about 7830.6257732061. The cubic root of 61318700 is about 394.3340806682.

The spelling of 61318700 in words is "sixty-one million, three hundred eighteen thousand, seven hundred".