653123 has 8 divisors (see below), whose sum is σ = 700128. Its totient is φ = 607104.

The previous prime is 653117. The next prime is 653143. The reversal of 653123 is 321356.

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

It is not a de Polignac number, because 653123 - 2¹⁴ = 636739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 653095 and 653104.

It is not an unprimeable number, because it can be changed into a prime (653113) 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, 1565 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (87516).

2⁶⁵³¹²³ is an apocalyptic number.

653123 is a deficient number, since it is larger than the sum of its proper divisors (47005).

653123 is a wasteful number, since it uses less digits than its factorization.

653123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its digits is 540, while the sum is 20.

The square root of 653123 is about 808.1602563848. The cubic root of 653123 is about 86.7624204658.

Adding to 653123 its reverse (321356), we get a palindrome (974479).

The spelling of 653123 in words is "six hundred fifty-three thousand, one hundred twenty-three".