6864251 has 2 divisors, whose sum is σ = 6864252. Its totient is φ = 6864250.

The previous prime is 6864241. The next prime is 6864257. The reversal of 6864251 is 1524686.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6864251 is a prime.

It is not a weakly prime, because it can be changed into another prime (6864257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432125 + 3432126.

It is an arithmetic number, because the mean of its divisors is an integer number (3432126).

Almost surely, 2^6864251 is an apocalyptic number.

6864251 is a deficient number, since it is larger than the sum of its proper divisors (1).

6864251 is an equidigital number, since it uses as much as digits as its factorization.

6864251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 6864251 is about 2619.9715647312. The cubic root of 6864251 is about 190.0484733202.

The spelling of 6864251 in words is "six million, eight hundred sixty-four thousand, two hundred fifty-one".