61908980 has 24 divisors (see below), whose sum is σ = 148581888. Its totient is φ = 21225888.

The previous prime is 61908967. The next prime is 61908983. The reversal of 61908980 is 8980916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61908983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220964 + ... + 221243.

It is an arithmetic number, because the mean of its divisors is an integer number (6190912).

Almost surely, 2^61908980 is an apocalyptic number.

It is an amenable number.

61908980 is an abundant number, since it is smaller than the sum of its proper divisors (86672908).

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

61908980 is a wasteful number, since it uses less digits than its factorization.

61908980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442223 (or 442221 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 61908980 is about 7868.2259754026. The cubic root of 61908980 is about 395.5953847707.

The spelling of 61908980 in words is "sixty-one million, nine hundred eight thousand, nine hundred eighty".