1266030636 has 96 divisors (see below), whose sum is σ = 3285950976. Its totient is φ = 376896000.

The previous prime is 1266030631. The next prime is 1266030671. The reversal of 1266030636 is 6360306621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1266030597 and 1266030606.

It is not an unprimeable number, because it can be changed into a prime (1266030631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 837121 + ... + 838631.

It is an arithmetic number, because the mean of its divisors is an integer number (34228656).

Almost surely, 2^1266030636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266030636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642975488).

1266030636 is an abundant number, since it is smaller than the sum of its proper divisors (2019920340).

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

1266030636 is a wasteful number, since it uses less digits than its factorization.

1266030636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1701 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 1266030636 is about 35581.3242586613. The cubic root of 1266030636 is about 1081.8027265418.

The spelling of 1266030636 in words is "one billion, two hundred sixty-six million, thirty thousand, six hundred thirty-six".