2621494868 has 6 divisors (see below), whose sum is σ = 4587616026. Its totient is φ = 1310747432.

The previous prime is 2621494829. The next prime is 2621494891. The reversal of 2621494868 is 8684941262.

It can be written as a sum of positive squares in only one way, i.e., 1698428944 + 923065924 = 41212^2 + 30382^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327686855 + ... + 327686862.

It is an arithmetic number, because the mean of its divisors is an integer number (764602671).

Almost surely, 2^2621494868 is an apocalyptic number.

It is an amenable number.

2621494868 is a deficient number, since it is larger than the sum of its proper divisors (1966121158).

2621494868 is a wasteful number, since it uses less digits than its factorization.

2621494868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655373721 (or 655373719 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 2621494868 is about 51200.5358175088. The cubic root of 2621494868 is about 1378.8478214689.

The spelling of 2621494868 in words is "two billion, six hundred twenty-one million, four hundred ninety-four thousand, eight hundred sixty-eight".