7698643 has 2 divisors, whose sum is σ = 7698644. Its totient is φ = 7698642.

The previous prime is 7698641. The next prime is 7698679. The reversal of 7698643 is 3468967.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7698643 - 2¹ = 7698641 is a prime.

Together with 7698641, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 7⁸ + 6 + 9⁵ + 8³ + 6⁷ + 4² + 3¹³ .

It is a self number, because there is not a number n which added to its sum of digits gives 7698643.

It is not a weakly prime, because it can be changed into another prime (7698641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3849321 + 3849322.

It is an arithmetic number, because the mean of its divisors is an integer number (3849322).

Almost surely, 2^7698643 is an apocalyptic number.

7698643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7698643 is an equidigital number, since it uses as much as digits as its factorization.

7698643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 7698643 is about 2774.6428599011. The cubic root of 7698643 is about 197.4564813584.

The spelling of 7698643 in words is "seven million, six hundred ninety-eight thousand, six hundred forty-three".