61668704 has 36 divisors (see below), whose sum is σ = 126953316. Its totient is φ = 29485632.

The previous prime is 61668697. The next prime is 61668713. The reversal of 61668704 is 40786616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15107 + ... + 18749.

It is an arithmetic number, because the mean of its divisors is an integer number (3526481).

Almost surely, 2^61668704 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 61668704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63476658).

61668704 is an abundant number, since it is smaller than the sum of its proper divisors (65284612).

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

61668704 is a wasteful number, since it uses less digits than its factorization.

61668704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 61668704 is about 7852.9423784974. The cubic root of 61668704 is about 395.0829372393.

The spelling of 61668704 in words is "sixty-one million, six hundred sixty-eight thousand, seven hundred four".