6817479973 has 4 divisors (see below), whose sum is σ = 6818505568. Its totient is φ = 6816454380.

The previous prime is 6817479971. The next prime is 6817480009. The reversal of 6817479973 is 3799747186.

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 6817479973 - 2¹ = 6817479971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6817479971) 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, 502761 + ... + 516142.

It is an arithmetic number, because the mean of its divisors is an integer number (1704626392).

Almost surely, 2^6817479973 is an apocalyptic number.

It is an amenable number.

6817479973 is a deficient number, since it is larger than the sum of its proper divisors (1025595).

6817479973 is a wasteful number, since it uses less digits than its factorization.

6817479973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025594.

The product of its digits is 16003008, while the sum is 61.

The square root of 6817479973 is about 82568.0323914770. The cubic root of 6817479973 is about 1896.1584405811.

The spelling of 6817479973 in words is "six billion, eight hundred seventeen million, four hundred seventy-nine thousand, nine hundred seventy-three".