6269779643 has 2 divisors, whose sum is σ = 6269779644. Its totient is φ = 6269779642.

The previous prime is 6269779627. The next prime is 6269779651. The reversal of 6269779643 is 3469779626.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6269779643 - 2⁴ = 6269779627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6269779693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134889821 + 3134889822.

It is an arithmetic number, because the mean of its divisors is an integer number (3134889822).

Almost surely, 2^6269779643 is an apocalyptic number.

6269779643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6269779643 is an equidigital number, since it uses as much as digits as its factorization.

6269779643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 59.

The square root of 6269779643 is about 79181.9401315729. The cubic root of 6269779643 is about 1843.9568717827.

The spelling of 6269779643 in words is "six billion, two hundred sixty-nine million, seven hundred seventy-nine thousand, six hundred forty-three".