61980208 has 20 divisors (see below), whose sum is σ = 122123880. Its totient is φ = 30464384.

The previous prime is 61980179. The next prime is 61980211. The reversal of 61980208 is 80208916.

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, 31885 + ... + 33772.

It is an arithmetic number, because the mean of its divisors is an integer number (6106194).

Almost surely, 2^61980208 is an apocalyptic number.

It is an amenable number.

61980208 is a deficient number, since it is larger than the sum of its proper divisors (60143672).

61980208 is a wasteful number, since it uses less digits than its factorization.

61980208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65724 (or 65718 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 61980208 is about 7872.7509804388. The cubic root of 61980208 is about 395.7470411144.

The spelling of 61980208 in words is "sixty-one million, nine hundred eighty thousand, two hundred eight".