2627851621 has 2 divisors, whose sum is σ = 2627851622. Its totient is φ = 2627851620.

The previous prime is 2627851613. The next prime is 2627851643. The reversal of 2627851621 is 1261587262.

2627851621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2497000900 + 130850721 = 49970^2 + 11439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2627851621 - 2³ = 2627851613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2627851321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313925810 + 1313925811.

It is an arithmetic number, because the mean of its divisors is an integer number (1313925811).

Almost surely, 2^2627851621 is an apocalyptic number.

It is an amenable number.

2627851621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2627851621 is an equidigital number, since it uses as much as digits as its factorization.

2627851621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 2627851621 is about 51262.5752474454. The cubic root of 2627851621 is about 1379.9614252677.

The spelling of 2627851621 in words is "two billion, six hundred twenty-seven million, eight hundred fifty-one thousand, six hundred twenty-one".