1622164 has 6 divisors (see below), whose sum is σ = 2838794. Its totient is φ = 811080.

The previous prime is 1622149. The next prime is 1622189. The reversal of 1622164 is 4612261.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 412164 = 1100^2 + 642^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202767 + ... + 202774.

2^1622164 is an apocalyptic number.

It is an amenable number.

1622164 is a deficient number, since it is larger than the sum of its proper divisors (1216630).

1622164 is a wasteful number, since it uses less digits than its factorization.

1622164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405545 (or 405543 counting only the distinct ones).

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

The square root of 1622164 is about 1273.6420219198. The cubic root of 1622164 is about 117.4983008657.

The spelling of 1622164 in words is "one million, six hundred twenty-two thousand, one hundred sixty-four".