801623 has 4 divisors (see below), whose sum is σ = 810720. Its totient is φ = 792528.

The previous prime is 801617. The next prime is 801631. The reversal of 801623 is 326108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 801623 - 2⁴ = 801607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 801595 and 801604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4415 + ... + 4592.

It is an arithmetic number, because the mean of its divisors is an integer number (202680).

2⁸⁰¹⁶²³ is an apocalyptic number.

801623 is a deficient number, since it is larger than the sum of its proper divisors (9097).

801623 is an equidigital number, since it uses as much as digits as its factorization.

801623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 801623 is about 895.3340158846. The cubic root of 801623 is about 92.8945117557.

The spelling of 801623 in words is "eight hundred one thousand, six hundred twenty-three".