561749707 has 2 divisors, whose sum is σ = 561749708. Its totient is φ = 561749706.

The previous prime is 561749701. The next prime is 561749761. The reversal of 561749707 is 707947165.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561749707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (561749701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280874853 + 280874854.

It is an arithmetic number, because the mean of its divisors is an integer number (280874854).

Almost surely, 2^561749707 is an apocalyptic number.

561749707 is a deficient number, since it is larger than the sum of its proper divisors (1).

561749707 is an equidigital number, since it uses as much as digits as its factorization.

561749707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 561749707 is about 23701.2596078774. The cubic root of 561749707 is about 825.1146247835.

The spelling of 561749707 in words is "five hundred sixty-one million, seven hundred forty-nine thousand, seven hundred seven".