561075736 has 32 divisors (see below), whose sum is σ = 1142991360. Its totient is φ = 256660992.

The previous prime is 561075689. The next prime is 561075763. The reversal of 561075736 is 637570165.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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, 12120 + ... + 35623.

It is an arithmetic number, because the mean of its divisors is an integer number (35718480).

Almost surely, 2^561075736 is an apocalyptic number.

It is an amenable number.

561075736 is an abundant number, since it is smaller than the sum of its proper divisors (581915624).

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

561075736 is a wasteful number, since it uses less digits than its factorization.

561075736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47875 (or 47871 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 561075736 is about 23687.0372989110. The cubic root of 561075736 is about 824.7845098652.

The spelling of 561075736 in words is "five hundred sixty-one million, seventy-five thousand, seven hundred thirty-six".