266077880 has 32 divisors (see below), whose sum is σ = 633893040. Its totient is φ = 100170240.

The previous prime is 266077879. The next prime is 266077883. The reversal of 266077880 is 88770662.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266077883) 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, 194966 + ... + 196325.

Almost surely, 2^266077880 is an apocalyptic number.

266077880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266077880 is an abundant number, since it is smaller than the sum of its proper divisors (367815160).

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

266077880 is a wasteful number, since it uses less digits than its factorization.

266077880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391319 (or 391315 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 266077880 is about 16311.8938201547. The cubic root of 266077880 is about 643.1855179264.

The spelling of 266077880 in words is "two hundred sixty-six million, seventy-seven thousand, eight hundred eighty".