166268023 has 4 divisors (see below), whose sum is σ = 166326048. Its totient is φ = 166210000.

The previous prime is 166268021. The next prime is 166268027. The reversal of 166268023 is 320862661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320862661 = 7 ⋅45837523.

It is a cyclic number.

It is not a de Polignac number, because 166268023 - 2¹ = 166268021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166268023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166268021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24478 + ... + 30523.

It is an arithmetic number, because the mean of its divisors is an integer number (41581512).

Almost surely, 2^166268023 is an apocalyptic number.

166268023 is a deficient number, since it is larger than the sum of its proper divisors (58025).

166268023 is an equidigital number, since it uses as much as digits as its factorization.

166268023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58024.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 166268023 is about 12894.4958412495. The cubic root of 166268023 is about 549.8820937339.

It can be divided in two parts, 16626 and 8023, that added together give a square (24649 = 157²).

The spelling of 166268023 in words is "one hundred sixty-six million, two hundred sixty-eight thousand, twenty-three".