1422665 has 16 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 1068672.

The previous prime is 1422661. The next prime is 1422671. The reversal of 1422665 is 5662241.

It is not a de Polignac number, because 1422665 - 2² = 1422661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1422661) 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 in 15 ways as a sum of consecutive naturals, for example, 10166 + ... + 10304.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^1422665 is an apocalyptic number.

It is an amenable number.

1422665 is a deficient number, since it is larger than the sum of its proper divisors (391735).

1422665 is a wasteful number, since it uses less digits than its factorization.

1422665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256.

The product of its digits is 2880, while the sum is 26.

The square root of 1422665 is about 1192.7552137803. The cubic root of 1422665 is about 112.4693579098.

The spelling of 1422665 in words is "one million, four hundred twenty-two thousand, six hundred sixty-five".