561200364 has 18 divisors (see below), whose sum is σ = 1418589900. Its totient is φ = 187066776.

The previous prime is 561200329. The next prime is 561200369. The reversal of 561200364 is 463002165.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (561200369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7794414 + ... + 7794485.

It is an arithmetic number, because the mean of its divisors is an integer number (78810550).

Almost surely, 2^561200364 is an apocalyptic number.

It is an amenable number.

561200364 is an abundant number, since it is smaller than the sum of its proper divisors (857389536).

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

561200364 is a wasteful number, since it uses less digits than its factorization.

561200364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15588909 (or 15588904 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 561200364 is about 23689.6678744131. The cubic root of 561200364 is about 824.8455732995.

The spelling of 561200364 in words is "five hundred sixty-one million, two hundred thousand, three hundred sixty-four".