2639763764 has 24 divisors (see below), whose sum is σ = 5045846400. Its totient is φ = 1198393280.

The previous prime is 2639763761. The next prime is 2639763787. The reversal of 2639763764 is 4673679362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639763761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484 + ... + 72675.

It is an arithmetic number, because the mean of its divisors is an integer number (210243600).

Almost surely, 2^2639763764 is an apocalyptic number.

It is an amenable number.

2639763764 is a deficient number, since it is larger than the sum of its proper divisors (2406082636).

2639763764 is a wasteful number, since it uses less digits than its factorization.

2639763764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74983 (or 74981 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 53.

The square root of 2639763764 is about 51378.6313947735. The cubic root of 2639763764 is about 1382.0434202588.

The spelling of 2639763764 in words is "two billion, six hundred thirty-nine million, seven hundred sixty-three thousand, seven hundred sixty-four".