6407007643 has 2 divisors, whose sum is σ = 6407007644. Its totient is φ = 6407007642.

The previous prime is 6407007641. The next prime is 6407007701. The reversal of 6407007643 is 3467007046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6407007643 - 2¹ = 6407007641 is a prime.

Together with 6407007641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6407007641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203503821 + 3203503822.

It is an arithmetic number, because the mean of its divisors is an integer number (3203503822).

Almost surely, 2^6407007643 is an apocalyptic number.

6407007643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6407007643 is an equidigital number, since it uses as much as digits as its factorization.

6407007643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 6407007643 is about 80043.7857862807. The cubic root of 6407007643 is about 1857.3129237183.

The spelling of 6407007643 in words is "six billion, four hundred seven million, seven thousand, six hundred forty-three".