6206868649 has 2 divisors, whose sum is σ = 6206868650. Its totient is φ = 6206868648.

The previous prime is 6206868631. The next prime is 6206868653. The reversal of 6206868649 is 9468686026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4445555625 + 1761313024 = 66675^2 + 41968^2 .

It is a cyclic number.

It is not a de Polignac number, because 6206868649 - 2¹⁷ = 6206737577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6206868649.

It is not a weakly prime, because it can be changed into another prime (6206868749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3103434324 + 3103434325.

It is an arithmetic number, because the mean of its divisors is an integer number (3103434325).

Almost surely, 2^6206868649 is an apocalyptic number.

It is an amenable number.

6206868649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6206868649 is an equidigital number, since it uses as much as digits as its factorization.

6206868649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The square root of 6206868649 is about 78783.6826316211. The cubic root of 6206868649 is about 1837.7687044933.

The spelling of 6206868649 in words is "six billion, two hundred six million, eight hundred sixty-eight thousand, six hundred forty-nine".