166233761 has 2 divisors, whose sum is σ = 166233762. Its totient is φ = 166233760.

The previous prime is 166233737. The next prime is 166233763. The reversal of 166233761 is 167332661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165920161 + 313600 = 12881^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 166233761 - 2²² = 162039457 is a prime.

It is a super-3 number, since 3×166233761³ (a number of 26 digits) contains 333 as substring.

Together with 166233763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166233763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83116880 + 83116881.

It is an arithmetic number, because the mean of its divisors is an integer number (83116881).

Almost surely, 2^166233761 is an apocalyptic number.

It is an amenable number.

166233761 is a deficient number, since it is larger than the sum of its proper divisors (1).

166233761 is an equidigital number, since it uses as much as digits as its factorization.

166233761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 166233761 is about 12893.1672214394. The cubic root of 166233761 is about 549.8443206769.

The spelling of 166233761 in words is "one hundred sixty-six million, two hundred thirty-three thousand, seven hundred sixty-one".