610660505 has 16 divisors (see below), whose sum is σ = 901899264. Its totient is φ = 386527680.

The previous prime is 610660487. The next prime is 610660507. The reversal of 610660505 is 505066016.

It is not a de Polignac number, because 610660505 - 2²⁸ = 342225049 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (610660507) 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, 670601 + ... + 671510.

It is an arithmetic number, because the mean of its divisors is an integer number (56368704).

Almost surely, 2^610660505 is an apocalyptic number.

610660505 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

610660505 is a deficient number, since it is larger than the sum of its proper divisors (291238759).

610660505 is a wasteful number, since it uses less digits than its factorization.

610660505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342136.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 610660505 is about 24711.5459856319. The cubic root of 610660505 is about 848.3986019347.

The spelling of 610660505 in words is "six hundred ten million, six hundred sixty thousand, five hundred five".