1320750684 has 72 divisors (see below), whose sum is σ = 3776992128. Its totient is φ = 400224240.

The previous prime is 1320750679. The next prime is 1320750701. The reversal of 1320750684 is 4860570231.

1320750684 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51072 + ... + 72455.

It is an arithmetic number, because the mean of its divisors is an integer number (52458224).

Almost surely, 2^1320750684 is an apocalyptic number.

It is an amenable number.

1320750684 is an abundant number, since it is smaller than the sum of its proper divisors (2456241444).

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

1320750684 is a wasteful number, since it uses less digits than its factorization.

1320750684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123557 (or 123543 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1320750684 is about 36342.1337293230. The cubic root of 1320750684 is about 1097.1692183782.

The spelling of 1320750684 in words is "one billion, three hundred twenty million, seven hundred fifty thousand, six hundred eighty-four".