6432278687 has 2 divisors, whose sum is σ = 6432278688. Its totient is φ = 6432278686.

The previous prime is 6432278681. The next prime is 6432278689. The reversal of 6432278687 is 7868722346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6432278687 - 2²⁴ = 6415501471 is a prime.

Together with 6432278689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6432278681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216139343 + 3216139344.

It is an arithmetic number, because the mean of its divisors is an integer number (3216139344).

Almost surely, 2^6432278687 is an apocalyptic number.

6432278687 is a deficient number, since it is larger than the sum of its proper divisors (1).

6432278687 is an equidigital number, since it uses as much as digits as its factorization.

6432278687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 53.

The square root of 6432278687 is about 80201.4880597611. The cubic root of 6432278687 is about 1859.7516420811.

The spelling of 6432278687 in words is "six billion, four hundred thirty-two million, two hundred seventy-eight thousand, six hundred eighty-seven".