2621606287 has 2 divisors, whose sum is σ = 2621606288. Its totient is φ = 2621606286.

The previous prime is 2621606249. The next prime is 2621606311. The reversal of 2621606287 is 7826061262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2621606287 - 2²⁷ = 2487388559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2621606237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310803143 + 1310803144.

It is an arithmetic number, because the mean of its divisors is an integer number (1310803144).

Almost surely, 2^2621606287 is an apocalyptic number.

2621606287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621606287 is an equidigital number, since it uses as much as digits as its factorization.

2621606287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 2621606287 is about 51201.6238707329. The cubic root of 2621606287 is about 1378.8673558283.

The spelling of 2621606287 in words is "two billion, six hundred twenty-one million, six hundred six thousand, two hundred eighty-seven".