61102860 has 288 divisors, whose sum is σ = 229404672. Its totient is φ = 11819520.

The previous prime is 61102859. The next prime is 61102889. The reversal of 61102860 is 6820116.

It is a self number, because there is not a number n which added to its sum of digits gives 61102860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1971045 + ... + 1971075.

It is an arithmetic number, because the mean of its divisors is an integer number (796544).

Almost surely, 2^61102860 is an apocalyptic number.

61102860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61102860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114702336).

61102860 is an abundant number, since it is smaller than the sum of its proper divisors (168301812).

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

61102860 is a wasteful number, since it uses less digits than its factorization.

61102860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 61102860 is about 7816.8318390509. The cubic root of 61102860 is about 393.8708553178.

Adding to 61102860 its reverse (6820116), we get a palindrome (67922976).

The spelling of 61102860 in words is "sixty-one million, one hundred two thousand, eight hundred sixty".