864427 has 2 divisors, whose sum is σ = 864428. Its totient is φ = 864426.

The previous prime is 864419. The next prime is 864439. The reversal of 864427 is 724468.

864427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864427 - 2³ = 864419 is a prime.

It is not a weakly prime, because it can be changed into another prime (864407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432213 + 432214.

It is an arithmetic number, because the mean of its divisors is an integer number (432214).

2⁸⁶⁴⁴²⁷ is an apocalyptic number.

864427 is a deficient number, since it is larger than the sum of its proper divisors (1).

864427 is an equidigital number, since it uses as much as digits as its factorization.

864427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 31.

The square root of 864427 is about 929.7456641469. The cubic root of 864427 is about 95.2597508176.

The spelling of 864427 in words is "eight hundred sixty-four thousand, four hundred twenty-seven".