6381812 has 6 divisors (see below), whose sum is σ = 11168178. Its totient is φ = 3190904.

The previous prime is 6381811. The next prime is 6381821. The reversal of 6381812 is 2181836.

It can be written as a sum of positive squares in only one way, i.e., 6370576 + 11236 = 2524^2 + 106^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797723 + ... + 797730.

It is an arithmetic number, because the mean of its divisors is an integer number (1861363).

Almost surely, 2^6381812 is an apocalyptic number.

It is an amenable number.

6381812 is a deficient number, since it is larger than the sum of its proper divisors (4786366).

6381812 is a wasteful number, since it uses less digits than its factorization.

6381812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595457 (or 1595455 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 6381812 is about 2526.2248514335. The cubic root of 6381812 is about 185.4875089368.

The spelling of 6381812 in words is "six million, three hundred eighty-one thousand, eight hundred twelve".