2679889761 has 12 divisors (see below), whose sum is σ = 3975572692. Its totient is φ = 1738306656.

The previous prime is 2679889753. The next prime is 2679889811. The reversal of 2679889761 is 1679889762.

It can be written as a sum of positive squares in 2 ways, for example, as 1357185600 + 1322704161 = 36840^2 + 36369^2 .

It is not a de Polignac number, because 2679889761 - 2³ = 2679889753 is a prime.

It is a super-2 number, since 2×2679889761² = 14363618262225274242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2679889711) 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, 4023526 + ... + 4024191.

Almost surely, 2^2679889761 is an apocalyptic number.

It is an amenable number.

2679889761 is a deficient number, since it is larger than the sum of its proper divisors (1295682931).

2679889761 is a wasteful number, since it uses less digits than its factorization.

2679889761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8047760 (or 8047757 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 2679889761 is about 51767.6516851982. The cubic root of 2679889761 is about 1389.0108659140.

Subtracting from 2679889761 its reverse (1679889762), we obtain a palindrome (999999999).

The spelling of 2679889761 in words is "two billion, six hundred seventy-nine million, eight hundred eighty-nine thousand, seven hundred sixty-one".