6857497 has 2 divisors, whose sum is σ = 6857498. Its totient is φ = 6857496.

The previous prime is 6857489. The next prime is 6857503. The reversal of 6857497 is 7947586.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6170256 + 687241 = 2484^2 + 829^2 .

It is a cyclic number.

It is not a de Polignac number, because 6857497 - 2³ = 6857489 is a prime.

6857497 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6857407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428748 + 3428749.

It is an arithmetic number, because the mean of its divisors is an integer number (3428749).

Almost surely, 2^6857497 is an apocalyptic number.

It is an amenable number.

6857497 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857497 is an equidigital number, since it uses as much as digits as its factorization.

6857497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 6857497 is about 2618.6823022276. The cubic root of 6857497 is about 189.9861208698.

The spelling of 6857497 in words is "six million, eight hundred fifty-seven thousand, four hundred ninety-seven".