6406817397 has 4 divisors (see below), whose sum is σ = 8542423200. Its totient is φ = 4271211596.

The previous prime is 6406817381. The next prime is 6406817411. The reversal of 6406817397 is 7937186046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6406817397 - 2⁴ = 6406817381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406817327) 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, 1067802897 + ... + 1067802902.

It is an arithmetic number, because the mean of its divisors is an integer number (2135605800).

Almost surely, 2^6406817397 is an apocalyptic number.

It is an amenable number.

6406817397 is a deficient number, since it is larger than the sum of its proper divisors (2135605803).

6406817397 is a wasteful number, since it uses less digits than its factorization.

6406817397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135605802.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 6406817397 is about 80042.5973903896. The cubic root of 6406817397 is about 1857.2945402091.

The spelling of 6406817397 in words is "six billion, four hundred six million, eight hundred seventeen thousand, three hundred ninety-seven".