61953980 has 24 divisors (see below), whose sum is σ = 141931440. Its totient is φ = 22528640.

The previous prime is 61953959. The next prime is 61953989. The reversal of 61953980 is 8935916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61953989) 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, 140585 + ... + 141024.

It is an arithmetic number, because the mean of its divisors is an integer number (5913810).

Almost surely, 2^61953980 is an apocalyptic number.

It is an amenable number.

61953980 is an abundant number, since it is smaller than the sum of its proper divisors (79977460).

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

61953980 is a wasteful number, since it uses less digits than its factorization.

61953980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281629 (or 281627 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 61953980 is about 7871.0850586180. The cubic root of 61953980 is about 395.6912108304.

The spelling of 61953980 in words is "sixty-one million, nine hundred fifty-three thousand, nine hundred eighty".