561342947 has 16 divisors (see below), whose sum is σ = 649227264. Its totient is φ = 480492000.

The previous prime is 561342919. The next prime is 561342989. The reversal of 561342947 is 749243165.

It is a cyclic number.

It is not a de Polignac number, because 561342947 - 2⁶ = 561342883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561342997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9629 + ... + 34862.

It is an arithmetic number, because the mean of its divisors is an integer number (40576704).

Almost surely, 2^561342947 is an apocalyptic number.

561342947 is a deficient number, since it is larger than the sum of its proper divisors (87884317).

561342947 is a wasteful number, since it uses less digits than its factorization.

561342947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44570.

The product of its digits is 181440, while the sum is 41.

The square root of 561342947 is about 23692.6770754172. The cubic root of 561342947 is about 824.9154229795.

The spelling of 561342947 in words is "five hundred sixty-one million, three hundred forty-two thousand, nine hundred forty-seven".