61560560 has 40 divisors (see below), whose sum is σ = 145838880. Its totient is φ = 24157952.

The previous prime is 61560547. The next prime is 61560593. The reversal of 61560560 is 6506516.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3020 + ... + 11499.

It is an arithmetic number, because the mean of its divisors is an integer number (3645972).

Almost surely, 2^61560560 is an apocalyptic number.

It is an amenable number.

61560560 is an abundant number, since it is smaller than the sum of its proper divisors (84278320).

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

61560560 is a wasteful number, since it uses less digits than its factorization.

61560560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14585 (or 14579 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 61560560 is about 7846.0537851840. The cubic root of 61560560 is about 394.8518592055.

The spelling of 61560560 in words is "sixty-one million, five hundred sixty thousand, five hundred sixty".