1623873 has 16 divisors (see below), whose sum is σ = 2355200. Its totient is φ = 991440.

The previous prime is 1623863. The next prime is 1623883. The reversal of 1623873 is 3783261.

It is an interprime number because it is at equal distance from previous prime (1623863) and next prime (1623883).

It is not a de Polignac number, because 1623873 - 2⁹ = 1623361 is a prime.

It is a Duffinian number.

1623873 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1623873.

It is not an unprimeable number, because it can be changed into a prime (1623833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1308 + ... + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (147200).

2^1623873 is an apocalyptic number.

It is an amenable number.

1623873 is a deficient number, since it is larger than the sum of its proper divisors (731327).

1623873 is a wasteful number, since it uses less digits than its factorization.

1623873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its digits is 6048, while the sum is 30.

The square root of 1623873 is about 1274.3127559591. The cubic root of 1623873 is about 117.5395490830.

The spelling of 1623873 in words is "one million, six hundred twenty-three thousand, eight hundred seventy-three".