61090560 has 108 divisors (see below), whose sum is σ = 211406832. Its totient is φ = 16287744.

The previous prime is 61090543. The next prime is 61090583. The reversal of 61090560 is 6509016.

61090560 is a `hidden beast` number, since 6 + 10 + 90 + 560 = 666.

It is a super-2 number, since 2×61090560² = 7464113042227200, which contains 22 as substring.

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, 8869 + ... + 14171.

Almost surely, 2^61090560 is an apocalyptic number.

61090560 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 61090560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105703416).

61090560 is an abundant number, since it is smaller than the sum of its proper divisors (150316272).

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

61090560 is a wasteful number, since it uses less digits than its factorization.

61090560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5313 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 61090560 is about 7816.0450356942. The cubic root of 61090560 is about 393.8444248221.

Adding to 61090560 its reverse (6509016), we get a palindrome (67599576).

The spelling of 61090560 in words is "sixty-one million, ninety thousand, five hundred sixty".