61744656 has 40 divisors (see below), whose sum is σ = 159793344. Its totient is φ = 20544640.

The previous prime is 61744651. The next prime is 61744679. The reversal of 61744656 is 65644716.

It is not an unprimeable number, because it can be changed into a prime (61744651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44485 + ... + 45851.

Almost surely, 2^61744656 is an apocalyptic number.

It is an amenable number.

61744656 is an abundant number, since it is smaller than the sum of its proper divisors (98048688).

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

61744656 is a wasteful number, since it uses less digits than its factorization.

61744656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319 (or 2313 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 61744656 is about 7857.7767848164. The cubic root of 61744656 is about 395.2450671722.

The spelling of 61744656 in words is "sixty-one million, seven hundred forty-four thousand, six hundred fifty-six".