6430636427 has 4 divisors (see below), whose sum is σ = 6808909176. Its totient is φ = 6052363680.

The previous prime is 6430636423. The next prime is 6430636441. The reversal of 6430636427 is 7246360346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6430636427 - 2² = 6430636423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6430636423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189136349 + ... + 189136382.

It is an arithmetic number, because the mean of its divisors is an integer number (1702227294).

Almost surely, 2^6430636427 is an apocalyptic number.

6430636427 is a deficient number, since it is larger than the sum of its proper divisors (378272749).

6430636427 is a wasteful number, since it uses less digits than its factorization.

6430636427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378272748.

The product of its (nonzero) digits is 435456, while the sum is 41.

The square root of 6430636427 is about 80191.2490674637. The cubic root of 6430636427 is about 1859.5933541791.

The spelling of 6430636427 in words is "six billion, four hundred thirty million, six hundred thirty-six thousand, four hundred twenty-seven".