40623 has 8 divisors (see below), whose sum is σ = 59136. Its totient is φ = 24600.

The previous prime is 40609. The next prime is 40627. The reversal of 40623 is 32604.

40623 = 32² + 33² + ... + 53².

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

It is not a de Polignac number, because 40623 - 2⁵ = 40591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (7392).

2⁴⁰⁶²³ is an apocalyptic number.

40623 is a deficient number, since it is larger than the sum of its proper divisors (18513).

40623 is a wasteful number, since it uses less digits than its factorization.

40623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40623 is about 201.5514822570. The cubic root of 40623 is about 34.3761575368.

The spelling of 40623 in words is "forty thousand, six hundred twenty-three".