61623 has 12 divisors (see below), whose sum is σ = 91728. Its totient is φ = 39840.

The previous prime is 61613. The next prime is 61627. The reversal of 61623 is 32616.

It is a happy number.

It is not a de Polignac number, because 61623 - 2⁶ = 61559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61596 and 61605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286 + ... + 452.

It is an arithmetic number, because the mean of its divisors is an integer number (7644).

2⁶¹⁶²³ is an apocalyptic number.

61623 is a deficient number, since it is larger than the sum of its proper divisors (30105).

61623 is a wasteful number, since it uses less digits than its factorization.

61623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 211 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 61623 is about 248.2398034160. The cubic root of 61623 is about 39.4985311637.

The spelling of 61623 in words is "sixty-one thousand, six hundred twenty-three".