566561540 has 48 divisors (see below), whose sum is σ = 1220365440. Its totient is φ = 220872960.

The previous prime is 566561539. The next prime is 566561561. The reversal of 566561540 is 45165665.

It is a junction number, because it is equal to n+sod(n) for n = 566561494 and 566561503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124139 + ... + 128621.

It is an arithmetic number, because the mean of its divisors is an integer number (25424280).

Almost surely, 2^566561540 is an apocalyptic number.

It is an amenable number.

566561540 is an abundant number, since it is smaller than the sum of its proper divisors (653803900).

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

566561540 is a wasteful number, since it uses less digits than its factorization.

566561540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652 (or 4650 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 566561540 is about 23802.5532243917. The cubic root of 566561540 is about 827.4638508258.

The spelling of 566561540 in words is "five hundred sixty-six million, five hundred sixty-one thousand, five hundred forty".