2647402643 has 2 divisors, whose sum is σ = 2647402644. Its totient is φ = 2647402642.

The previous prime is 2647402621. The next prime is 2647402657. The reversal of 2647402643 is 3462047462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2647402643 - 2²² = 2643208339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2647402597 and 2647402606.

It is not a weakly prime, because it can be changed into another prime (2647402243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323701321 + 1323701322.

It is an arithmetic number, because the mean of its divisors is an integer number (1323701322).

Almost surely, 2^2647402643 is an apocalyptic number.

2647402643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647402643 is an equidigital number, since it uses as much as digits as its factorization.

2647402643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 38.

The square root of 2647402643 is about 51452.9167589166. The cubic root of 2647402643 is about 1383.3752433941.

The spelling of 2647402643 in words is "two billion, six hundred forty-seven million, four hundred two thousand, six hundred forty-three".