123664433 has 2 divisors, whose sum is σ = 123664434. Its totient is φ = 123664432.

The previous prime is 123664403. The next prime is 123664451. The reversal of 123664433 is 334466321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76440049 + 47224384 = 8743^2 + 6872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123664433 is a prime.

It is a super-2 number, since 2×123664433² = 30585783978422978, which contains 22 as substring.

It is a Chen prime.

It is equal to p_7038356 and since 123664433 and 7038356 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123664433.

It is not a weakly prime, because it can be changed into another prime (123664403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61832216 + 61832217.

It is an arithmetic number, because the mean of its divisors is an integer number (61832217).

Almost surely, 2^123664433 is an apocalyptic number.

It is an amenable number.

123664433 is a deficient number, since it is larger than the sum of its proper divisors (1).

123664433 is an equidigital number, since it uses as much as digits as its factorization.

123664433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

The square root of 123664433 is about 11120.4511149503. The cubic root of 123664433 is about 498.2128638996.

The spelling of 123664433 in words is "one hundred twenty-three million, six hundred sixty-four thousand, four hundred thirty-three".