6857707 has 2 divisors, whose sum is σ = 6857708. Its totient is φ = 6857706.

The previous prime is 6857699. The next prime is 6857713. The reversal of 6857707 is 7077586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6857707 - 2³ = 6857699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6857707.

It is not a weakly prime, because it can be changed into another prime (6857777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428853 + 3428854.

It is an arithmetic number, because the mean of its divisors is an integer number (3428854).

Almost surely, 2^6857707 is an apocalyptic number.

6857707 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857707 is an equidigital number, since it uses as much as digits as its factorization.

6857707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 6857707 is about 2618.7223984226. The cubic root of 6857707 is about 189.9880601915.

It can be divided in two parts, 68 and 57707, that added together give a palindrome (57775).

The spelling of 6857707 in words is "six million, eight hundred fifty-seven thousand, seven hundred seven".