561939608 has 8 divisors (see below), whose sum is σ = 1053636780. Its totient is φ = 280969800.

The previous prime is 561939601. The next prime is 561939617. The reversal of 561939608 is 806939165.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×561939608² = 631552246078387328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561939601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35121218 + ... + 35121233.

Almost surely, 2^561939608 is an apocalyptic number.

It is an amenable number.

561939608 is a deficient number, since it is larger than the sum of its proper divisors (491697172).

561939608 is a wasteful number, since it uses less digits than its factorization.

561939608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70242457 (or 70242453 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 561939608 is about 23705.2654066560. The cubic root of 561939608 is about 825.2075917148.

The spelling of 561939608 in words is "five hundred sixty-one million, nine hundred thirty-nine thousand, six hundred eight".