7640680343 has 2 divisors, whose sum is σ = 7640680344. Its totient is φ = 7640680342.

The previous prime is 7640680319. The next prime is 7640680381. The reversal of 7640680343 is 3430860467.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7640680343 - 2⁶ = 7640680279 is a prime.

It is a super-2 number, since 2×7640680343² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7640680343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7640680303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820340171 + 3820340172.

It is an arithmetic number, because the mean of its divisors is an integer number (3820340172).

Almost surely, 2^7640680343 is an apocalyptic number.

7640680343 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640680343 is an equidigital number, since it uses as much as digits as its factorization.

7640680343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 7640680343 is about 87410.9852535710. The cubic root of 7640680343 is about 1969.5968617735.

The spelling of 7640680343 in words is "seven billion, six hundred forty million, six hundred eighty thousand, three hundred forty-three".