6397783812 has 192 divisors, whose sum is σ = 19555809280. Its totient is φ = 1770595200.

The previous prime is 6397783807. The next prime is 6397783823. The reversal of 6397783812 is 2183877936.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9258387 + ... + 9259077.

Almost surely, 2^6397783812 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 6397783812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9777904640).

6397783812 is an abundant number, since it is smaller than the sum of its proper divisors (13158025468).

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

6397783812 is a wasteful number, since it uses less digits than its factorization.

6397783812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1071 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 6397783812 is about 79986.1476256983. The cubic root of 6397783812 is about 1856.4212038399.

The spelling of 6397783812 in words is "six billion, three hundred ninety-seven million, seven hundred eighty-three thousand, eight hundred twelve".