6491812 has 6 divisors (see below), whose sum is σ = 11360678. Its totient is φ = 3245904.

The previous prime is 6491783. The next prime is 6491813. The reversal of 6491812 is 2181946.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6431296 + 60516 = 2536^2 + 246^2 .

It is a super-3 number, since 3×6491812³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6491813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811473 + ... + 811480.

Almost surely, 2^6491812 is an apocalyptic number.

It is an amenable number.

6491812 is a deficient number, since it is larger than the sum of its proper divisors (4868866).

6491812 is a wasteful number, since it uses less digits than its factorization.

6491812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622957 (or 1622955 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 6491812 is about 2547.9034518600. The cubic root of 6491812 is about 186.5471613199.

The spelling of 6491812 in words is "six million, four hundred ninety-one thousand, eight hundred twelve".