61730980 has 12 divisors (see below), whose sum is σ = 129635100. Its totient is φ = 24692384.

The previous prime is 61730971. The next prime is 61730993. The reversal of 61730980 is 8903716.

It can be written as a sum of positive squares in 2 ways, for example, as 25080064 + 36650916 = 5008^2 + 6054^2 .

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, 1543255 + ... + 1543294.

It is an arithmetic number, because the mean of its divisors is an integer number (10802925).

Almost surely, 2^61730980 is an apocalyptic number.

It is an amenable number.

61730980 is an abundant number, since it is smaller than the sum of its proper divisors (67904120).

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

61730980 is a wasteful number, since it uses less digits than its factorization.

61730980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086558 (or 3086556 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61730980 is about 7856.9065159260. The cubic root of 61730980 is about 395.2158836983.

The spelling of 61730980 in words is "sixty-one million, seven hundred thirty thousand, nine hundred eighty".