123206653 has 8 divisors (see below), whose sum is σ = 131554368. Its totient is φ = 115108224.

The previous prime is 123206639. The next prime is 123206669. The reversal of 123206653 is 356602321.

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

It is a cyclic number.

It is not a de Polignac number, because 123206653 - 2¹⁷ = 123075581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123206683) 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, 61300 + ... + 63277.

It is an arithmetic number, because the mean of its divisors is an integer number (16444296).

Almost surely, 2^123206653 is an apocalyptic number.

It is an amenable number.

123206653 is a deficient number, since it is larger than the sum of its proper divisors (8347715).

123206653 is a wasteful number, since it uses less digits than its factorization.

123206653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124643.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 123206653 is about 11099.8492332103. The cubic root of 123206653 is about 497.5973436448.

Adding to 123206653 its reverse (356602321), we get a palindrome (479808974).

The spelling of 123206653 in words is "one hundred twenty-three million, two hundred six thousand, six hundred fifty-three".