61907744 has 48 divisors (see below), whose sum is σ = 133249536. Its totient is φ = 28185600.

The previous prime is 61907717. The next prime is 61907759. The reversal of 61907744 is 44770916.

It is a junction number, because it is equal to n+sod(n) for n = 61907698 and 61907707.

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, 15029 + ... + 18699.

It is an arithmetic number, because the mean of its divisors is an integer number (2776032).

Almost surely, 2^61907744 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 61907744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66624768).

61907744 is an abundant number, since it is smaller than the sum of its proper divisors (71341792).

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

61907744 is a wasteful number, since it uses less digits than its factorization.

61907744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 61907744 is about 7868.1474312572. The cubic root of 61907744 is about 395.5927520932.

The spelling of 61907744 in words is "sixty-one million, nine hundred seven thousand, seven hundred forty-four".