1266466680 has 96 divisors (see below), whose sum is σ = 4358156400. Its totient is φ = 317856768.

The previous prime is 1266466667. The next prime is 1266466681. The reversal of 1266466680 is 866646621.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266466681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97350 + ... + 109589.

Almost surely, 2^1266466680 is an apocalyptic number.

1266466680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266466680 is an abundant number, since it is smaller than the sum of its proper divisors (3091689720).

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

1266466680 is a wasteful number, since it uses less digits than its factorization.

1266466680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206973 (or 206966 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 1266466680 is about 35587.4511590813. The cubic root of 1266466680 is about 1081.9269098039.

The spelling of 1266466680 in words is "one billion, two hundred sixty-six million, four hundred sixty-six thousand, six hundred eighty".