561081770 has 32 divisors (see below), whose sum is σ = 1092123648. Its totient is φ = 206733568.

The previous prime is 561081767. The next prime is 561081793. The reversal of 561081770 is 77180165.

561081770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 561081770.

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, 27122 + ... + 43101.

It is an arithmetic number, because the mean of its divisors is an integer number (34128864).

Almost surely, 2^561081770 is an apocalyptic number.

561081770 is a deficient number, since it is larger than the sum of its proper divisors (531041878).

561081770 is a wasteful number, since it uses less digits than its factorization.

561081770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70294.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 561081770 is about 23687.1646678111. The cubic root of 561081770 is about 824.7874665259.

The spelling of 561081770 in words is "five hundred sixty-one million, eighty-one thousand, seven hundred seventy".