166210433 has 8 divisors (see below), whose sum is σ = 170549736. Its totient is φ = 161884800.

The previous prime is 166210427. The next prime is 166210439. The reversal of 166210433 is 334012661.

It is an interprime number because it is at equal distance from previous prime (166210427) and next prime (166210439).

It can be written as a sum of positive squares in 4 ways, for example, as 48553024 + 117657409 = 6968^2 + 10847^2 .

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 166210433 - 2²⁴ = 149433217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166210439) 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, 24035 + ... + 30167.

It is an arithmetic number, because the mean of its divisors is an integer number (21318717).

Almost surely, 2^166210433 is an apocalyptic number.

It is an amenable number.

166210433 is a deficient number, since it is larger than the sum of its proper divisors (4339303).

166210433 is an equidigital number, since it uses as much as digits as its factorization.

166210433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 166210433 is about 12892.2625244757. The cubic root of 166210433 is about 549.8185991302.

The spelling of 166210433 in words is "one hundred sixty-six million, two hundred ten thousand, four hundred thirty-three".