609876761 has 12 divisors (see below), whose sum is σ = 665297892. Its totient is φ = 555763104.

The previous prime is 609876731. The next prime is 609876767. The reversal of 609876761 is 167678906.

It can be written as a sum of positive squares in 2 ways, for example, as 347598736 + 262278025 = 18644^2 + 16195^2 .

It is a de Polignac number, because none of the positive numbers 2^k-609876761 is a prime.

It is a super-2 number, since 2×609876761² = 743899327215702242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609876767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77375 + ... + 84891.

It is an arithmetic number, because the mean of its divisors is an integer number (55441491).

Almost surely, 2^609876761 is an apocalyptic number.

It is an amenable number.

609876761 is a deficient number, since it is larger than the sum of its proper divisors (55421131).

609876761 is an equidigital number, since it uses as much as digits as its factorization.

609876761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688 (or 7609 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 609876761 is about 24695.6830438034. The cubic root of 609876761 is about 848.0354912945.

The spelling of 609876761 in words is "six hundred nine million, eight hundred seventy-six thousand, seven hundred sixty-one".