2638276663 has 8 divisors (see below), whose sum is σ = 3003255936. Its totient is φ = 2294153400.

The previous prime is 2638276643. The next prime is 2638276679. The reversal of 2638276663 is 3666728362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2638276663 - 2²⁵ = 2604722231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638276643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5213733 + ... + 5214238.

It is an arithmetic number, because the mean of its divisors is an integer number (375406992).

Almost surely, 2^2638276663 is an apocalyptic number.

2638276663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2638276663 is a deficient number, since it is larger than the sum of its proper divisors (364979273).

2638276663 is a wasteful number, since it uses less digits than its factorization.

2638276663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10428005.

The product of its digits is 2612736, while the sum is 49.

The square root of 2638276663 is about 51364.1573765208. The cubic root of 2638276663 is about 1381.7838485201.

The spelling of 2638276663 in words is "two billion, six hundred thirty-eight million, two hundred seventy-six thousand, six hundred sixty-three".