266677440 has 56 divisors (see below), whose sum is σ = 846703920. Its totient is φ = 71113728.

The previous prime is 266677427. The next prime is 266677441. The reversal of 266677440 is 44776662.

266677440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266677440² = 142233714009907200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266677392 and 266677401.

It is not an unprimeable number, because it can be changed into a prime (266677441) 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, 137935 + ... + 139854.

Almost surely, 2^266677440 is an apocalyptic number.

266677440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266677440 is an abundant number, since it is smaller than the sum of its proper divisors (580026480).

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

266677440 is a wasteful number, since it uses less digits than its factorization.

266677440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277809 (or 277799 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 266677440 is about 16330.2614798417. The cubic root of 266677440 is about 643.6682575695.

The spelling of 266677440 in words is "two hundred sixty-six million, six hundred seventy-seven thousand, four hundred forty".