6715997 has 2 divisors, whose sum is σ = 6715998. Its totient is φ = 6715996.

The previous prime is 6715993. The next prime is 6715999. The reversal of 6715997 is 7995176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 2247001 = 2114^2 + 1499^2 .

It is a cyclic number.

It is not a de Polignac number, because 6715997 - 2² = 6715993 is a prime.

Together with 6715999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6715991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357998 + 3357999.

It is an arithmetic number, because the mean of its divisors is an integer number (3357999).

Almost surely, 2^6715997 is an apocalyptic number.

It is an amenable number.

6715997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6715997 is an equidigital number, since it uses as much as digits as its factorization.

6715997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 44.

The square root of 6715997 is about 2591.5240689602. The cubic root of 6715997 is about 188.6702816729.

The spelling of 6715997 in words is "six million, seven hundred fifteen thousand, nine hundred ninety-seven".