61974688 has 24 divisors (see below), whose sum is σ = 123203808. Its totient is φ = 30684864.

The previous prime is 61974683. The next prime is 61974691. The reversal of 61974688 is 88647916.

It is not an unprimeable number, because it can be changed into a prime (61974683) 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 3 ways as a sum of consecutive naturals, for example, 6106 + ... + 12697.

It is an arithmetic number, because the mean of its divisors is an integer number (5133492).

Almost surely, 2^61974688 is an apocalyptic number.

It is an amenable number.

61974688 is a deficient number, since it is larger than the sum of its proper divisors (61229120).

61974688 is a wasteful number, since it uses less digits than its factorization.

61974688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18916 (or 18908 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 61974688 is about 7872.4003963213. The cubic root of 61974688 is about 395.7352922643.

The spelling of 61974688 in words is "sixty-one million, nine hundred seventy-four thousand, six hundred eighty-eight".