6407784380 has 24 divisors (see below), whose sum is σ = 13458895632. Its totient is φ = 2562628352.

The previous prime is 6407784377. The next prime is 6407784403. The reversal of 6407784380 is 834877046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89444 + ... + 144276.

It is an arithmetic number, because the mean of its divisors is an integer number (560787318).

Almost surely, 2^6407784380 is an apocalyptic number.

It is an amenable number.

6407784380 is an abundant number, since it is smaller than the sum of its proper divisors (7051111252).

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

6407784380 is a wasteful number, since it uses less digits than its factorization.

6407784380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60685 (or 60683 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 47.

The square root of 6407784380 is about 80048.6375899053. The cubic root of 6407784380 is about 1857.3879761949.

The spelling of 6407784380 in words is "six billion, four hundred seven million, seven hundred eighty-four thousand, three hundred eighty".