1264867 has 2 divisors, whose sum is σ = 1264868. Its totient is φ = 1264866.

The previous prime is 1264859. The next prime is 1264873. The reversal of 1264867 is 7684621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264867 - 2³ = 1264859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632433 + 632434.

It is an arithmetic number, because the mean of its divisors is an integer number (632434).

2^1264867 is an apocalyptic number.

1264867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264867 is an equidigital number, since it uses as much as digits as its factorization.

1264867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 1264867 is about 1124.6630606542. The cubic root of 1264867 is about 108.1471188892.

The spelling of 1264867 in words is "one million, two hundred sixty-four thousand, eight hundred sixty-seven".