6432635647 has 2 divisors, whose sum is σ = 6432635648. Its totient is φ = 6432635646.

The previous prime is 6432635641. The next prime is 6432635663. The reversal of 6432635647 is 7465362346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6432635647 - 2³ = 6432635639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6432635597 and 6432635606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6432635641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216317823 + 3216317824.

It is an arithmetic number, because the mean of its divisors is an integer number (3216317824).

Almost surely, 2^6432635647 is an apocalyptic number.

6432635647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6432635647 is an equidigital number, since it uses as much as digits as its factorization.

6432635647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 46.

The square root of 6432635647 is about 80203.7134240055. The cubic root of 6432635647 is about 1859.7860438175.

The spelling of 6432635647 in words is "six billion, four hundred thirty-two million, six hundred thirty-five thousand, six hundred forty-seven".