1623923 has 8 divisors (see below), whose sum is σ = 1873248. Its totient is φ = 1378944.

The previous prime is 1623917. The next prime is 1623929. The reversal of 1623923 is 3293261.

It is an interprime number because it is at equal distance from previous prime (1623917) and next prime (1623929).

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

It is not a de Polignac number, because 1623923 - 2⁴ = 1623907 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1623892 and 1623901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236 + ... + 1817.

It is an arithmetic number, because the mean of its divisors is an integer number (234156).

2^1623923 is an apocalyptic number.

1623923 is a deficient number, since it is larger than the sum of its proper divisors (249325).

1623923 is a wasteful number, since it uses less digits than its factorization.

1623923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its digits is 1944, while the sum is 26.

The square root of 1623923 is about 1274.3323742258. The cubic root of 1623923 is about 117.5407554411.

The spelling of 1623923 in words is "one million, six hundred twenty-three thousand, nine hundred twenty-three".