1422661 has 2 divisors, whose sum is σ = 1422662. Its totient is φ = 1422660.

The previous prime is 1422647. The next prime is 1422671. The reversal of 1422661 is 1662241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 6561 = 1190^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422661 - 2¹¹ = 1420613 is a prime.

It is equal to p₁₀₈₆₇₀ and since 1422661 and 108670 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422601) 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, 711330 + 711331.

It is an arithmetic number, because the mean of its divisors is an integer number (711331).

2^1422661 is an apocalyptic number.

It is an amenable number.

1422661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422661 is an equidigital number, since it uses as much as digits as its factorization.

1422661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 1422661 is about 1192.7535369891. The cubic root of 1422661 is about 112.4692525025.

The spelling of 1422661 in words is "one million, four hundred twenty-two thousand, six hundred sixty-one".