1266670782 has 48 divisors (see below), whose sum is σ = 3129431760. Its totient is φ = 366817536.

The previous prime is 1266670781. The next prime is 1266670813. The reversal of 1266670782 is 2870766621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266670781) 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, 155232 + ... + 163187.

It is an arithmetic number, because the mean of its divisors is an integer number (65196495).

Almost surely, 2^1266670782 is an apocalyptic number.

1266670782 is an abundant number, since it is smaller than the sum of its proper divisors (1862760978).

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

1266670782 is a wasteful number, since it uses less digits than its factorization.

1266670782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318457 (or 318454 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 1266670782 is about 35590.3186554996. The cubic root of 1266670782 is about 1081.9850272915.

The spelling of 1266670782 in words is "one billion, two hundred sixty-six million, six hundred seventy thousand, seven hundred eighty-two".