6857699 has 2 divisors, whose sum is σ = 6857700. Its totient is φ = 6857698.

The previous prime is 6857687. The next prime is 6857707. The reversal of 6857699 is 9967586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6857699 - 2¹² = 6853603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6857639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428849 + 3428850.

It is an arithmetic number, because the mean of its divisors is an integer number (3428850).

Almost surely, 2^6857699 is an apocalyptic number.

6857699 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857699 is an equidigital number, since it uses as much as digits as its factorization.

6857699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 6857699 is about 2618.7208709597. The cubic root of 6857699 is about 189.9879863133.

The spelling of 6857699 in words is "six million, eight hundred fifty-seven thousand, six hundred ninety-nine".