623081 has 4 divisors (see below), whose sum is σ = 630672. Its totient is φ = 615492.

The previous prime is 623071. The next prime is 623107. The reversal of 623081 is 180326.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180326 = 2 ⋅90163.

It is a cyclic number.

It is not a de Polignac number, because 623081 - 2⁶ = 623017 is a prime.

It is a super-2 number, since 2×623081² = 776459865122, which contains 22 as substring.

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 623081.

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 3 ways as a sum of consecutive naturals, for example, 3671 + ... + 3836.

It is an arithmetic number, because the mean of its divisors is an integer number (157668).

2⁶²³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

623081 is a deficient number, since it is larger than the sum of its proper divisors (7591).

623081 is an equidigital number, since it uses as much as digits as its factorization.

623081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7590.

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

The square root of 623081 is about 789.3547998207. The cubic root of 623081 is about 85.4112024530.

The spelling of 623081 in words is "six hundred twenty-three thousand, eighty-one".