6473978695 has 4 divisors (see below), whose sum is σ = 7768774440. Its totient is φ = 5179182952.

The previous prime is 6473978677. The next prime is 6473978701. The reversal of 6473978695 is 5968793746.

It is a happy number.

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 6473978695 - 2²¹ = 6471881543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647397865 + ... + 647397874.

It is an arithmetic number, because the mean of its divisors is an integer number (1942193610).

Almost surely, 2^6473978695 is an apocalyptic number.

6473978695 is a deficient number, since it is larger than the sum of its proper divisors (1294795745).

6473978695 is a wasteful number, since it uses less digits than its factorization.

6473978695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294795744.

The product of its digits is 68584320, while the sum is 64.

The square root of 6473978695 is about 80461.0383664044. The cubic root of 6473978695 is about 1863.7618679955.

The spelling of 6473978695 in words is "six billion, four hundred seventy-three million, nine hundred seventy-eight thousand, six hundred ninety-five".