623955 has 8 divisors (see below), whose sum is σ = 998352. Its totient is φ = 332768.

The previous prime is 623947. The next prime is 623957. The reversal of 623955 is 559326.

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

It is a cyclic number.

It is not a de Polignac number, because 623955 - 2³ = 623947 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (623957) 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, 20784 + ... + 20813.

It is an arithmetic number, because the mean of its divisors is an integer number (124794).

2⁶²³⁹⁵⁵ is an apocalyptic number.

623955 is a deficient number, since it is larger than the sum of its proper divisors (374397).

623955 is a wasteful number, since it uses less digits than its factorization.

623955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41605.

The product of its digits is 8100, while the sum is 30.

The square root of 623955 is about 789.9082225170. The cubic root of 623955 is about 85.4511194217.

The spelling of 623955 in words is "six hundred twenty-three thousand, nine hundred fifty-five".