2639276997 has 16 divisors (see below), whose sum is σ = 4022976000. Its totient is φ = 1507700592.

The previous prime is 2639276971. The next prime is 2639276999. The reversal of 2639276997 is 7996729362.

It is not a de Polignac number, because 2639276997 - 2¹⁸ = 2639014853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2639276997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639276999) 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, 59254 + ... + 93752.

It is an arithmetic number, because the mean of its divisors is an integer number (251436000).

Almost surely, 2^2639276997 is an apocalyptic number.

It is an amenable number.

2639276997 is a deficient number, since it is larger than the sum of its proper divisors (1383699003).

2639276997 is a wasteful number, since it uses less digits than its factorization.

2639276997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38152.

The product of its digits is 15431472, while the sum is 60.

The square root of 2639276997 is about 51373.8941194845. The cubic root of 2639276997 is about 1381.9584663837.

The spelling of 2639276997 in words is "two billion, six hundred thirty-nine million, two hundred seventy-six thousand, nine hundred ninety-seven".