61841880 has 80 divisors (see below), whose sum is σ = 207868320. Its totient is φ = 16490304.

The previous prime is 61841867. The next prime is 61841887. The reversal of 61841880 is 8814816.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61841887) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6304 + ... + 12783.

It is an arithmetic number, because the mean of its divisors is an integer number (2598354).

Almost surely, 2^61841880 is an apocalyptic number.

61841880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61841880 is an abundant number, since it is smaller than the sum of its proper divisors (146026440).

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

61841880 is a wasteful number, since it uses less digits than its factorization.

61841880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19110 (or 19097 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 61841880 is about 7863.9608340835. The cubic root of 61841880 is about 395.4524111873.

The spelling of 61841880 in words is "sixty-one million, eight hundred forty-one thousand, eight hundred eighty".