864901 has 2 divisors, whose sum is σ = 864902. Its totient is φ = 864900.

The previous prime is 864887. The next prime is 864911. The reversal of 864901 is 109468.

It is a Cunningham number, because it is equal to 930²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 1 = 930^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 864901 - 2¹⁷ = 733829 is a prime.

864901 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 864901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432450 + 432451.

It is an arithmetic number, because the mean of its divisors is an integer number (432451).

2⁸⁶⁴⁹⁰¹ is an apocalyptic number.

It is an amenable number.

864901 is a deficient number, since it is larger than the sum of its proper divisors (1).

864901 is an equidigital number, since it uses as much as digits as its factorization.

864901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 864901 is about 930.0005376343. Note that the first 3 decimals coincide. The cubic root of 864901 is about 95.2771592169.

The spelling of 864901 in words is "eight hundred sixty-four thousand, nine hundred one".