610670665 has 12 divisors (see below), whose sum is σ = 805480452. Its totient is φ = 444123680.

The previous prime is 610670657. The next prime is 610670699. The reversal of 610670665 is 566076016.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 459159184 + 151511481 = 21428^2 + 12309^2 .

It is not a de Polignac number, because 610670665 - 2³ = 610670657 is a prime.

It is a super-2 number, since 2×610670665² = 745837322183084450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504082 + ... + 505291.

It is an arithmetic number, because the mean of its divisors is an integer number (67123371).

Almost surely, 2^610670665 is an apocalyptic number.

It is an amenable number.

610670665 is a deficient number, since it is larger than the sum of its proper divisors (194809787).

610670665 is a wasteful number, since it uses less digits than its factorization.

610670665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009400 (or 1009389 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 610670665 is about 24711.7515566987. The cubic root of 610670665 is about 848.4033070488.

The spelling of 610670665 in words is "six hundred ten million, six hundred seventy thousand, six hundred sixty-five".