561739007 has 16 divisors (see below), whose sum is σ = 606154752. Its totient is φ = 518663040.

The previous prime is 561738977. The next prime is 561739033. The reversal of 561739007 is 700937165.

It is a cyclic number.

It is not a de Polignac number, because 561739007 - 2⁶ = 561738943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561739067) 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, 268118 + ... + 270204.

It is an arithmetic number, because the mean of its divisors is an integer number (37884672).

Almost surely, 2^561739007 is an apocalyptic number.

561739007 is a deficient number, since it is larger than the sum of its proper divisors (44415745).

561739007 is a wasteful number, since it uses less digits than its factorization.

561739007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 561739007 is about 23701.0338804028. The cubic root of 561739007 is about 825.1093859245.

The spelling of 561739007 in words is "five hundred sixty-one million, seven hundred thirty-nine thousand, seven".