6858947 has 2 divisors, whose sum is σ = 6858948. Its totient is φ = 6858946.

The previous prime is 6858937. The next prime is 6858953. The reversal of 6858947 is 7498586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6858947 - 2¹⁶ = 6793411 is a prime.

It is not a weakly prime, because it can be changed into another prime (6858937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429473 + 3429474.

It is an arithmetic number, because the mean of its divisors is an integer number (3429474).

Almost surely, 2^6858947 is an apocalyptic number.

6858947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858947 is an equidigital number, since it uses as much as digits as its factorization.

6858947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 6858947 is about 2618.9591443931. The cubic root of 6858947 is about 189.9995106174. Note that the first 3 decimals are identical.

The spelling of 6858947 in words is "six million, eight hundred fifty-eight thousand, nine hundred forty-seven".