1622867 has 2 divisors, whose sum is σ = 1622868. Its totient is φ = 1622866.

The previous prime is 1622861. The next prime is 1622879. The reversal of 1622867 is 7682261.

It is a weak prime.

It is an emirp because it is prime and its reverse (7682261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1622867 - 2¹⁰ = 1621843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1622861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811433 + 811434.

It is an arithmetic number, because the mean of its divisors is an integer number (811434).

2^1622867 is an apocalyptic number.

1622867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622867 is an equidigital number, since it uses as much as digits as its factorization.

1622867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 1622867 is about 1273.9179722415. The cubic root of 1622867 is about 117.5152718946.

The spelling of 1622867 in words is "one million, six hundred twenty-two thousand, eight hundred sixty-seven".