61888980 has 24 divisors (see below), whose sum is σ = 173289312. Its totient is φ = 16503712.

The previous prime is 61888979. The next prime is 61888999. The reversal of 61888980 is 8988816.

61888980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515682 + ... + 515801.

It is an arithmetic number, because the mean of its divisors is an integer number (7220388).

Almost surely, 2^61888980 is an apocalyptic number.

61888980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61888980 is an abundant number, since it is smaller than the sum of its proper divisors (111400332).

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

61888980 is a wasteful number, since it uses less digits than its factorization.

61888980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031495 (or 1031493 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 61888980 is about 7866.9549382210. The cubic root of 61888980 is about 395.5527805053.

It can be divided in two parts, 618 and 88980, that added together give a palindrome (89598).

The spelling of 61888980 in words is "sixty-one million, eight hundred eighty-eight thousand, nine hundred eighty".