616623 has 8 divisors (see below), whose sum is σ = 939648. Its totient is φ = 352344.

The previous prime is 616597. The next prime is 616639. The reversal of 616623 is 326616.

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

It is not a de Polignac number, because 616623 - 2⁸ = 616367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 616593 and 616602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616643) 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, 14661 + ... + 14702.

It is an arithmetic number, because the mean of its divisors is an integer number (117456).

2⁶¹⁶⁶²³ is an apocalyptic number.

616623 is a deficient number, since it is larger than the sum of its proper divisors (323025).

616623 is a wasteful number, since it uses less digits than its factorization.

616623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29373.

The product of its digits is 1296, while the sum is 24.

The square root of 616623 is about 785.2534622655. The cubic root of 616623 is about 85.1150920737.

The spelling of 616623 in words is "six hundred sixteen thousand, six hundred twenty-three".