266674145 has 4 divisors (see below), whose sum is σ = 320008980. Its totient is φ = 213339312.

The previous prime is 266674097. The next prime is 266674153. The reversal of 266674145 is 541476662.

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: 541476662 = 2 ⋅270738331.

It can be written as a sum of positive squares in 2 ways, for example, as 209641441 + 57032704 = 14479^2 + 7552^2 .

It is a cyclic number.

It is not a de Polignac number, because 266674145 - 2⁶ = 266674081 is a prime.

It is a super-2 number, since 2×266674145² = 142230199222962050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26667410 + ... + 26667419.

It is an arithmetic number, because the mean of its divisors is an integer number (80002245).

Almost surely, 2^266674145 is an apocalyptic number.

It is an amenable number.

266674145 is a deficient number, since it is larger than the sum of its proper divisors (53334835).

266674145 is an equidigital number, since it uses as much as digits as its factorization.

266674145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53334834.

The product of its digits is 241920, while the sum is 41.

The square root of 266674145 is about 16330.1605932091. The cubic root of 266674145 is about 643.6656065570.

The spelling of 266674145 in words is "two hundred sixty-six million, six hundred seventy-four thousand, one hundred forty-five".