611056560 has 80 divisors (see below), whose sum is σ = 1906458336. Its totient is φ = 161900544.

The previous prime is 611056513. The next prime is 611056561. The reversal of 611056560 is 65650116.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (611056561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29572 + ... + 45788.

Almost surely, 2^611056560 is an apocalyptic number.

611056560 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 611056560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953229168).

611056560 is an abundant number, since it is smaller than the sum of its proper divisors (1295401776).

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

611056560 is a wasteful number, since it uses less digits than its factorization.

611056560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16390 (or 16384 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 611056560 is about 24719.5582484801. The cubic root of 611056560 is about 848.5819770886.

The spelling of 611056560 in words is "six hundred eleven million, fifty-six thousand, five hundred sixty".