1622545 has 8 divisors (see below), whose sum is σ = 1958400. Its totient is φ = 1290480.

The previous prime is 1622483. The next prime is 1622549. The reversal of 1622545 is 5452261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1622545 - 2¹¹ = 1620497 is a prime.

1622545 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622549) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 106 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (244800).

2^1622545 is an apocalyptic number.

It is an amenable number.

1622545 is a deficient number, since it is larger than the sum of its proper divisors (335855).

1622545 is a wasteful number, since it uses less digits than its factorization.

1622545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895.

The product of its digits is 2400, while the sum is 25.

The square root of 1622545 is about 1273.7915842083. The cubic root of 1622545 is about 117.5074991441.

The spelling of 1622545 in words is "one million, six hundred twenty-two thousand, five hundred forty-five".