6642630343 has 2 divisors, whose sum is σ = 6642630344. Its totient is φ = 6642630342.

The previous prime is 6642630287. The next prime is 6642630347. The reversal of 6642630343 is 3430362466.

6642630343 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6642630343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6642630347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321315171 + 3321315172.

It is an arithmetic number, because the mean of its divisors is an integer number (3321315172).

Almost surely, 2^6642630343 is an apocalyptic number.

6642630343 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642630343 is an equidigital number, since it uses as much as digits as its factorization.

6642630343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 37.

The square root of 6642630343 is about 81502.3333592358. Note that the first 4 decimals coincide. The cubic root of 6642630343 is about 1879.8074292531.

It can be divided in two parts, 66426 and 30343, that added together give a palindrome (96769).

The spelling of 6642630343 in words is "six billion, six hundred forty-two million, six hundred thirty thousand, three hundred forty-three".