233164621 has 2 divisors, whose sum is σ = 233164622. Its totient is φ = 233164620.

The previous prime is 233164601. The next prime is 233164667. The reversal of 233164621 is 126461332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228916900 + 4247721 = 15130^2 + 2061^2 .

It is a cyclic number.

It is not a de Polignac number, because 233164621 - 2¹⁹ = 232640333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233164621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233164601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116582310 + 116582311.

It is an arithmetic number, because the mean of its divisors is an integer number (116582311).

Almost surely, 2^233164621 is an apocalyptic number.

It is an amenable number.

233164621 is a deficient number, since it is larger than the sum of its proper divisors (1).

233164621 is an equidigital number, since it uses as much as digits as its factorization.

233164621 is an evil number, because the sum of its binary digits is even.

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

The square root of 233164621 is about 15269.7289104948. The cubic root of 233164621 is about 615.4898347075.

The spelling of 233164621 in words is "two hundred thirty-three million, one hundred sixty-four thousand, six hundred twenty-one".