61980588 has 18 divisors (see below), whose sum is σ = 156673244. Its totient is φ = 20660184.

The previous prime is 61980557. The next prime is 61980619. The reversal of 61980588 is 88508916.

61980588 is a `hidden beast` number, since 61 + 9 + 8 + 0 + 588 = 666.

It is an interprime number because it is at equal distance from previous prime (61980557) and next prime (61980619).

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860806 + ... + 860877.

Almost surely, 2^61980588 is an apocalyptic number.

It is an amenable number.

61980588 is an abundant number, since it is smaller than the sum of its proper divisors (94692656).

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

61980588 is a wasteful number, since it uses less digits than its factorization.

61980588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721693 (or 1721688 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 61980588 is about 7872.7751142783. The cubic root of 61980588 is about 395.7478498864.

The spelling of 61980588 in words is "sixty-one million, nine hundred eighty thousand, five hundred eighty-eight".