1266540060 has 96 divisors (see below), whose sum is σ = 3643782912. Its totient is φ = 328527360.

The previous prime is 1266540031. The next prime is 1266540071. The reversal of 1266540060 is 600456621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724107 + ... + 725853.

It is an arithmetic number, because the mean of its divisors is an integer number (37956072).

Almost surely, 2^1266540060 is an apocalyptic number.

1266540060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266540060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821891456).

1266540060 is an abundant number, since it is smaller than the sum of its proper divisors (2377242852).

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

1266540060 is a wasteful number, since it uses less digits than its factorization.

1266540060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1266540060 is about 35588.4821255417. The cubic root of 1266540060 is about 1081.9478052775.

Adding to 1266540060 its reverse (600456621), we get a palindrome (1866996681).

It can be divided in two parts, 12665 and 40060, that added together give a palindrome (52725).

The spelling of 1266540060 in words is "one billion, two hundred sixty-six million, five hundred forty thousand, sixty".