561163330 has 64 divisors (see below), whose sum is σ = 1272192768. Its totient is φ = 173456640.

The previous prime is 561163327. The next prime is 561163357. The reversal of 561163330 is 33361165.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31960 + ... + 46300.

It is an arithmetic number, because the mean of its divisors is an integer number (19878012).

Almost surely, 2^561163330 is an apocalyptic number.

561163330 is an abundant number, since it is smaller than the sum of its proper divisors (711029438).

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

561163330 is a wasteful number, since it uses less digits than its factorization.

561163330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14411.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 561163330 is about 23688.8862127370. The cubic root of 561163330 is about 824.8274288571.

The spelling of 561163330 in words is "five hundred sixty-one million, one hundred sixty-three thousand, three hundred thirty".