4661623 has 4 divisors (see below), whose sum is σ = 4683928. Its totient is φ = 4639320.

The previous prime is 4661609. The next prime is 4661639. The reversal of 4661623 is 3261664.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4661623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4661591 and 4661600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4661693) 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, 10836 + ... + 11257.

It is an arithmetic number, because the mean of its divisors is an integer number (1170982).

Almost surely, 2^4661623 is an apocalyptic number.

4661623 is a deficient number, since it is larger than the sum of its proper divisors (22305).

4661623 is a wasteful number, since it uses less digits than its factorization.

4661623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22304.

The product of its digits is 5184, while the sum is 28.

The square root of 4661623 is about 2159.0792018821. The cubic root of 4661623 is about 167.0497061214.

The spelling of 4661623 in words is "four million, six hundred sixty-one thousand, six hundred twenty-three".