561404712 has 64 divisors (see below), whose sum is σ = 1541352960. Its totient is φ = 168984000.

The previous prime is 561404687. The next prime is 561404743. The reversal of 561404712 is 217404165.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 561404712.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32823 + ... + 46905.

It is an arithmetic number, because the mean of its divisors is an integer number (24083640).

Almost surely, 2^561404712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561404712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770676480).

561404712 is an abundant number, since it is smaller than the sum of its proper divisors (979948248).

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

561404712 is a wasteful number, since it uses less digits than its factorization.

561404712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14254 (or 14250 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 561404712 is about 23693.9805013847. The cubic root of 561404712 is about 824.9456772312.

Adding to 561404712 its reverse (217404165), we get a palindrome (778808877).

The spelling of 561404712 in words is "five hundred sixty-one million, four hundred four thousand, seven hundred twelve".