1623243 has 8 divisors (see below), whose sum is σ = 2176000. Its totient is φ = 1076328.

The previous prime is 1623233. The next prime is 1623263. The reversal of 1623243 is 3423261.

It is a happy number.

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

It is not a de Polignac number, because 1623243 - 2⁸ = 1622987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623203) 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, 763 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (272000).

2^1623243 is an apocalyptic number.

1623243 is a deficient number, since it is larger than the sum of its proper divisors (552757).

1623243 is a wasteful number, since it uses less digits than its factorization.

1623243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921.

The product of its digits is 864, while the sum is 21.

The square root of 1623243 is about 1274.0655399154. The cubic root of 1623243 is about 117.5243468486.

The spelling of 1623243 in words is "one million, six hundred twenty-three thousand, two hundred forty-three".