266340395 has 4 divisors (see below), whose sum is σ = 319608480. Its totient is φ = 213072312.

The previous prime is 266340359. The next prime is 266340401. The reversal of 266340395 is 593043662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 266340395 - 2¹² = 266336299 is a prime.

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, 26634035 + ... + 26634044.

It is an arithmetic number, because the mean of its divisors is an integer number (79902120).

Almost surely, 2^266340395 is an apocalyptic number.

266340395 is a deficient number, since it is larger than the sum of its proper divisors (53268085).

266340395 is an equidigital number, since it uses as much as digits as its factorization.

266340395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53268084.

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 266340395 is about 16319.9385721883. The cubic root of 266340395 is about 643.3969727435.

The spelling of 266340395 in words is "two hundred sixty-six million, three hundred forty thousand, three hundred ninety-five".