61315760 has 40 divisors (see below), whose sum is σ = 155521296. Its totient is φ = 22296320.

The previous prime is 61315759. The next prime is 61315763. The reversal of 61315760 is 6751316.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (61315763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33959 + ... + 35718.

Almost surely, 2^61315760 is an apocalyptic number.

It is an amenable number.

61315760 is an abundant number, since it is smaller than the sum of its proper divisors (94205536).

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

61315760 is a wasteful number, since it uses less digits than its factorization.

61315760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69701 (or 69695 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 61315760 is about 7830.4380464952. The cubic root of 61315760 is about 394.3277782910.

The spelling of 61315760 in words is "sixty-one million, three hundred fifteen thousand, seven hundred sixty".