61390756 has 24 divisors (see below), whose sum is σ = 125639360. Its totient is φ = 25697952.

The previous prime is 61390751. The next prime is 61390759. The reversal of 61390756 is 65709316.

It is not an unprimeable number, because it can be changed into a prime (61390751) 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, 24291 + ... + 26698.

Almost surely, 2^61390756 is an apocalyptic number.

It is an amenable number.

61390756 is an abundant number, since it is smaller than the sum of its proper divisors (64248604).

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

61390756 is a wasteful number, since it uses less digits than its factorization.

61390756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51043 (or 51041 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 61390756 is about 7835.2253317949. The cubic root of 61390756 is about 394.4884817122.

The spelling of 61390756 in words is "sixty-one million, three hundred ninety thousand, seven hundred fifty-six".