266100491 has 8 divisors (see below), whose sum is σ = 289765200. Its totient is φ = 243401760.

The previous prime is 266100481. The next prime is 266100503. The reversal of 266100491 is 194001662.

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 266100491 - 2⁶ = 266100427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (266100421) 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, 240920 + ... + 242021.

It is an arithmetic number, because the mean of its divisors is an integer number (36220650).

Almost surely, 2^266100491 is an apocalyptic number.

266100491 is a deficient number, since it is larger than the sum of its proper divisors (23664709).

266100491 is a wasteful number, since it uses less digits than its factorization.

266100491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482989.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 266100491 is about 16312.5868886575. The cubic root of 266100491 is about 643.2037364718.

The spelling of 266100491 in words is "two hundred sixty-six million, one hundred thousand, four hundred ninety-one".