623091 has 8 divisors (see below), whose sum is σ = 949504. Its totient is φ = 356040.

The previous prime is 623071. The next prime is 623107. The reversal of 623091 is 190326.

623091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 623091 - 2⁵ = 623059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 29671 = 623091 / (6 + 2 + 3 + 0 + 9 + 1).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623091.

It is not an unprimeable number, because it can be changed into a prime (623041) 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, 14815 + ... + 14856.

It is an arithmetic number, because the mean of its divisors is an integer number (118688).

2⁶²³⁰⁹¹ is an apocalyptic number.

623091 is a deficient number, since it is larger than the sum of its proper divisors (326413).

623091 is a wasteful number, since it uses less digits than its factorization.

623091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29681.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 623091 is about 789.3611340825. The cubic root of 623091 is about 85.4116593799.

The spelling of 623091 in words is "six hundred twenty-three thousand, ninety-one".