6994172817 has 12 divisors (see below), whose sum is σ = 10451063220. Its totient is φ = 4501996128.

The previous prime is 6994172791. The next prime is 6994172837. The reversal of 6994172817 is 7182714996.

It can be written as a sum of positive squares in 2 ways, for example, as 1950900561 + 5043272256 = 44169^2 + 71016^2 .

It is not a de Polignac number, because 6994172817 - 2⁸ = 6994172561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6994172837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13398538 + ... + 13399059.

It is an arithmetic number, because the mean of its divisors is an integer number (870921935).

Almost surely, 2^6994172817 is an apocalyptic number.

It is an amenable number.

6994172817 is a deficient number, since it is larger than the sum of its proper divisors (3456890403).

6994172817 is a wasteful number, since it uses less digits than its factorization.

6994172817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26797632 (or 26797629 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 6994172817 is about 83631.1713238551. The cubic root of 6994172817 is about 1912.4002258855.

The spelling of 6994172817 in words is "six billion, nine hundred ninety-four million, one hundred seventy-two thousand, eight hundred seventeen".