61974668 has 12 divisors (see below), whose sum is σ = 123949392. Its totient is φ = 26560560.

The previous prime is 61974629. The next prime is 61974677. The reversal of 61974668 is 86647916.

It is a happy number.

61974668 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106663 + ... + 1106718.

It is an arithmetic number, because the mean of its divisors is an integer number (10329116).

Almost surely, 2^61974668 is an apocalyptic number.

It is an amenable number.

61974668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61974668 is a wasteful number, since it uses less digits than its factorization.

61974668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213392 (or 2213390 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 61974668 is about 7872.3991260606. The cubic root of 61974668 is about 395.7352496948.

The spelling of 61974668 in words is "sixty-one million, nine hundred seventy-four thousand, six hundred sixty-eight".