266433491 has 8 divisors (see below), whose sum is σ = 272179440. Its totient is φ = 260714272.

The previous prime is 266433481. The next prime is 266433493. The reversal of 266433491 is 194334662.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266433491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266433493) 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, 14156 + ... + 27078.

It is an arithmetic number, because the mean of its divisors is an integer number (34022430).

Almost surely, 2^266433491 is an apocalyptic number.

266433491 is a deficient number, since it is larger than the sum of its proper divisors (5745949).

266433491 is a wasteful number, since it uses less digits than its factorization.

266433491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13365.

The product of its digits is 93312, while the sum is 38.

The square root of 266433491 is about 16322.7905396106. The cubic root of 266433491 is about 643.4719278363.

The spelling of 266433491 in words is "two hundred sixty-six million, four hundred thirty-three thousand, four hundred ninety-one".