1240776966 has 128 divisors (see below), whose sum is σ = 3001807872. Its totient is φ = 336960000.

The previous prime is 1240776937. The next prime is 1240776983. The reversal of 1240776966 is 6696770421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7902960 + ... + 7903116.

It is an arithmetic number, because the mean of its divisors is an integer number (23451624).

Almost surely, 2^1240776966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240776966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1500903936).

1240776966 is an abundant number, since it is smaller than the sum of its proper divisors (1761030906).

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

1240776966 is a wasteful number, since it uses less digits than its factorization.

1240776966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 1240776966 is about 35224.6641715716. The cubic root of 1240776966 is about 1074.5614121437.

The spelling of 1240776966 in words is "one billion, two hundred forty million, seven hundred seventy-six thousand, nine hundred sixty-six".