1266896862 has 180 divisors, whose sum is σ = 3632511960. Its totient is φ = 328814640.

The previous prime is 1266896849. The next prime is 1266896893. The reversal of 1266896862 is 2686986621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1266896799 and 1266896808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 959839 + ... + 961157.

It is an arithmetic number, because the mean of its divisors is an integer number (20180622).

Almost surely, 2^1266896862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266896862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816255980).

1266896862 is an abundant number, since it is smaller than the sum of its proper divisors (2365615098).

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

1266896862 is a wasteful number, since it uses less digits than its factorization.

1266896862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1342 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1266896862 is about 35593.4946584344. The cubic root of 1266896862 is about 1082.0493956674.

The spelling of 1266896862 in words is "one billion, two hundred sixty-six million, eight hundred ninety-six thousand, eight hundred sixty-two".