61103880 has 48 divisors (see below), whose sum is σ = 198588780. Its totient is φ = 16294272.

The previous prime is 61103851. The next prime is 61103897. The reversal of 61103880 is 8830116.

It can be written as a sum of positive squares in 2 ways, for example, as 53846244 + 7257636 = 7338^2 + 2694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84507 + ... + 85226.

Almost surely, 2^61103880 is an apocalyptic number.

61103880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61103880 is an abundant number, since it is smaller than the sum of its proper divisors (137484900).

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

61103880 is a wasteful number, since it uses less digits than its factorization.

61103880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169750 (or 169743 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 61103880 is about 7816.8970826025. The cubic root of 61103880 is about 393.8730469557.

Adding to 61103880 its reverse (8830116), we get a palindrome (69933996).

The spelling of 61103880 in words is "sixty-one million, one hundred three thousand, eight hundred eighty".