61090880 has 28 divisors (see below), whose sum is σ = 145473420. Its totient is φ = 24436224.

The previous prime is 61090873. The next prime is 61090919. The reversal of 61090880 is 8809016.

It can be written as a sum of positive squares in 2 ways, for example, as 21752896 + 39337984 = 4664^2 + 6272^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95135 + ... + 95774.

Almost surely, 2^61090880 is an apocalyptic number.

It is an amenable number.

61090880 is an abundant number, since it is smaller than the sum of its proper divisors (84382540).

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

61090880 is a wasteful number, since it uses less digits than its factorization.

61090880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190926 (or 190916 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 61090880 is about 7816.0655063785. The cubic root of 61090880 is about 393.8451124897.

Adding to 61090880 its reverse (8809016), we get a palindrome (69899896).

The spelling of 61090880 in words is "sixty-one million, ninety thousand, eight hundred eighty".