561622340 has 12 divisors (see below), whose sum is σ = 1179406956. Its totient is φ = 224648928.

The previous prime is 561622333. The next prime is 561622343. The reversal of 561622340 is 43226165.

It can be written as a sum of positive squares in 2 ways, for example, as 423371776 + 138250564 = 20576^2 + 11758^2 .

It is not an unprimeable number, because it can be changed into a prime (561622343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14040539 + ... + 14040578.

It is an arithmetic number, because the mean of its divisors is an integer number (98283913).

Almost surely, 2^561622340 is an apocalyptic number.

It is an amenable number.

561622340 is an abundant number, since it is smaller than the sum of its proper divisors (617784616).

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

561622340 is a wasteful number, since it uses less digits than its factorization.

561622340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28081126 (or 28081124 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 561622340 is about 23698.5725308509. The cubic root of 561622340 is about 825.0522599280.

The spelling of 561622340 in words is "five hundred sixty-one million, six hundred twenty-two thousand, three hundred forty".