1266713740 has 12 divisors (see below), whose sum is σ = 2660098896. Its totient is φ = 506685488.

The previous prime is 1266713711. The next prime is 1266713761. The reversal of 1266713740 is 473176621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266713740.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31667824 + ... + 31667863.

It is an arithmetic number, because the mean of its divisors is an integer number (221674908).

Almost surely, 2^1266713740 is an apocalyptic number.

1266713740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266713740 is an abundant number, since it is smaller than the sum of its proper divisors (1393385156).

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

1266713740 is a wasteful number, since it uses less digits than its factorization.

1266713740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63335696 (or 63335694 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 1266713740 is about 35590.9221572018. The cubic root of 1266713740 is about 1081.9972586695.

The spelling of 1266713740 in words is "one billion, two hundred sixty-six million, seven hundred thirteen thousand, seven hundred forty".