561223386 has 12 divisors (see below), whose sum is σ = 1215984042. Its totient is φ = 187074456.

The previous prime is 561223357. The next prime is 561223393. The reversal of 561223386 is 683322165.

It is a happy number.

561223386 is a `hidden beast` number, since 5 + 612 + 2 + 3 + 38 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 372683025 + 188540361 = 19305^2 + 13731^2 .

It is a super-3 number, since 3×561223386³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561223386.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15589521 + ... + 15589556.

Almost surely, 2^561223386 is an apocalyptic number.

561223386 is an abundant number, since it is smaller than the sum of its proper divisors (654760656).

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

561223386 is a wasteful number, since it uses less digits than its factorization.

561223386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31179085 (or 31179082 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 561223386 is about 23690.1537774663. The cubic root of 561223386 is about 824.8568522985.

The spelling of 561223386 in words is "five hundred sixty-one million, two hundred twenty-three thousand, three hundred eighty-six".