233685860621 has 2 divisors, whose sum is σ = 233685860622. Its totient is φ = 233685860620.

The previous prime is 233685860549. The next prime is 233685860647. The reversal of 233685860621 is 126068586332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138198062500 + 95487798121 = 371750^2 + 309011^2 .

It is a cyclic number.

It is not a de Polignac number, because 233685860621 - 2¹⁴ = 233685844237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233685860621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233685860021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116842930310 + 116842930311.

It is an arithmetic number, because the mean of its divisors is an integer number (116842930311).

Almost surely, 2^233685860621 is an apocalyptic number.

It is an amenable number.

233685860621 is a deficient number, since it is larger than the sum of its proper divisors (1).

233685860621 is an equidigital number, since it uses as much as digits as its factorization.

233685860621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 233685860621 in words is "two hundred thirty-three billion, six hundred eighty-five million, eight hundred sixty thousand, six hundred twenty-one".