266897842 has 16 divisors (see below), whose sum is σ = 418659840. Its totient is φ = 127369792.

The previous prime is 266897831. The next prime is 266897849. The reversal of 266897842 is 248798662.

It is a self number, because there is not a number n which added to its sum of digits gives 266897842.

It is not an unprimeable number, because it can be changed into a prime (266897849) 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, 15978 + ... + 28090.

It is an arithmetic number, because the mean of its divisors is an integer number (26166240).

Almost surely, 2^266897842 is an apocalyptic number.

266897842 is a deficient number, since it is larger than the sum of its proper divisors (151761998).

266897842 is a wasteful number, since it uses less digits than its factorization.

266897842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12617.

The product of its digits is 2322432, while the sum is 52.

The square root of 266897842 is about 16337.0083552650. The cubic root of 266897842 is about 643.8455337906.

The spelling of 266897842 in words is "two hundred sixty-six million, eight hundred ninety-seven thousand, eight hundred forty-two".