266297668 has 24 divisors (see below), whose sum is σ = 573564992. Its totient is φ = 105348384.

The previous prime is 266297663. The next prime is 266297671. The reversal of 266297668 is 866792662.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (266297663) 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, 365430 + ... + 366157.

Almost surely, 2^266297668 is an apocalyptic number.

266297668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

266297668 is an abundant number, since it is smaller than the sum of its proper divisors (307267324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266297668 is a wasteful number, since it uses less digits than its factorization.

266297668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731611 (or 731609 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The square root of 266297668 is about 16318.6294767667. The cubic root of 266297668 is about 643.3625657801.

The spelling of 266297668 in words is "two hundred sixty-six million, two hundred ninety-seven thousand, six hundred sixty-eight".