6430636397 has 8 divisors (see below), whose sum is σ = 6604156800. Its totient is φ = 6258645184.

The previous prime is 6430636379. The next prime is 6430636403. The reversal of 6430636397 is 7936360346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6430636397 - 2¹⁴ = 6430620013 is a prime.

It is a super-2 number, since 2×6430636397² = 82706168940842283218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6430636097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373772 + ... + 390597.

It is an arithmetic number, because the mean of its divisors is an integer number (825519600).

Almost surely, 2^6430636397 is an apocalyptic number.

It is an amenable number.

6430636397 is a deficient number, since it is larger than the sum of its proper divisors (173520403).

6430636397 is a wasteful number, since it uses less digits than its factorization.

6430636397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764595.

The product of its (nonzero) digits is 1469664, while the sum is 47.

The square root of 6430636397 is about 80191.2488804109. The cubic root of 6430636397 is about 1859.5933512873.

The spelling of 6430636397 in words is "six billion, four hundred thirty million, six hundred thirty-six thousand, three hundred ninety-seven".