610716561 has 64 divisors (see below), whose sum is σ = 1041051648. Its totient is φ = 309858048.

The previous prime is 610716503. The next prime is 610716577. The reversal of 610716561 is 165617016.

It is not a de Polignac number, because 610716561 - 2⁹ = 610716049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (610736561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1040110 + ... + 1040696.

It is an arithmetic number, because the mean of its divisors is an integer number (16266432).

Almost surely, 2^610716561 is an apocalyptic number.

It is an amenable number.

610716561 is a deficient number, since it is larger than the sum of its proper divisors (430335087).

610716561 is a wasteful number, since it uses less digits than its factorization.

610716561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 610716561 is about 24712.6801662628. The cubic root of 610716561 is about 848.4245609177.

The spelling of 610716561 in words is "six hundred ten million, seven hundred sixteen thousand, five hundred sixty-one".