6997436917 has 4 divisors (see below), whose sum is σ = 7024664556. Its totient is φ = 6970209280.

The previous prime is 6997436903. The next prime is 6997436923. The reversal of 6997436917 is 7196347996.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6810540676 + 186896241 = 82526^2 + 13671^2 .

It is a cyclic number.

It is not a de Polignac number, because 6997436917 - 2²³ = 6989048309 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 (6997436977) 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, 13613434 + ... + 13613947.

It is an arithmetic number, because the mean of its divisors is an integer number (1756166139).

Almost surely, 2^6997436917 is an apocalyptic number.

It is an amenable number.

6997436917 is a deficient number, since it is larger than the sum of its proper divisors (27227639).

6997436917 is a wasteful number, since it uses less digits than its factorization.

6997436917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27227638.

The product of its digits is 15431472, while the sum is 61.

The square root of 6997436917 is about 83650.6839003723. The cubic root of 6997436917 is about 1912.6976780136.

The spelling of 6997436917 in words is "six billion, nine hundred ninety-seven million, four hundred thirty-six thousand, nine hundred seventeen".