561867430 has 16 divisors (see below), whose sum is σ = 1064591280. Its totient is φ = 212918112.

The previous prime is 561867407. The next prime is 561867461. The reversal of 561867430 is 34768165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478409 + ... + 1478788.

It is an arithmetic number, because the mean of its divisors is an integer number (66536955).

Almost surely, 2^561867430 is an apocalyptic number.

561867430 is a deficient number, since it is larger than the sum of its proper divisors (502723850).

561867430 is a wasteful number, since it uses less digits than its factorization.

561867430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957223.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 561867430 is about 23703.7429533819. The cubic root of 561867430 is about 825.1722591019.

The spelling of 561867430 in words is "five hundred sixty-one million, eight hundred sixty-seven thousand, four hundred thirty".