6487812 has 36 divisors (see below), whose sum is σ = 17366076. Its totient is φ = 2035200.

The previous prime is 6487807. The next prime is 6487813. The reversal of 6487812 is 2187846.

6487812 is a `hidden beast` number, since 648 + 7 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5308416 + 1179396 = 2304^2 + 1086^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (6487813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4689 + ... + 5912.

It is an arithmetic number, because the mean of its divisors is an integer number (482391).

Almost surely, 2^6487812 is an apocalyptic number.

It is an amenable number.

6487812 is an abundant number, since it is smaller than the sum of its proper divisors (10878264).

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

6487812 is a wasteful number, since it uses less digits than its factorization.

6487812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628 (or 10623 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 6487812 is about 2547.1183718076. The cubic root of 6487812 is about 186.5088390993.

The spelling of 6487812 in words is "six million, four hundred eighty-seven thousand, eight hundred twelve".