561366770 has 16 divisors (see below), whose sum is σ = 1010881728. Its totient is φ = 224453040.

The previous prime is 561366721. The next prime is 561366779. The reversal of 561366770 is 77663165.

It is not an unprimeable number, because it can be changed into a prime (561366779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16757 + ... + 37463.

It is an arithmetic number, because the mean of its divisors is an integer number (63180108).

Almost surely, 2^561366770 is an apocalyptic number.

561366770 is a deficient number, since it is larger than the sum of its proper divisors (449514958).

561366770 is a wasteful number, since it uses less digits than its factorization.

561366770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23425.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 561366770 is about 23693.1798203618. The cubic root of 561366770 is about 824.9270924246.

The spelling of 561366770 in words is "five hundred sixty-one million, three hundred sixty-six thousand, seven hundred seventy".