6491836 has 24 divisors (see below), whose sum is σ = 12340944. Its totient is φ = 2970240.

The previous prime is 6491833. The next prime is 6491857. The reversal of 6491836 is 6381946.

It is a super-4 number, since 4×6491836⁴ (a number of 28 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6491795 and 6491804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6336 + ... + 7288.

It is an arithmetic number, because the mean of its divisors is an integer number (514206).

Almost surely, 2^6491836 is an apocalyptic number.

It is an amenable number.

6491836 is a deficient number, since it is larger than the sum of its proper divisors (5849108).

6491836 is a wasteful number, since it uses less digits than its factorization.

6491836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1099 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 6491836 is about 2547.9081616102. The cubic root of 6491836 is about 186.5473912057.

It can be divided in two parts, 649 and 1836, that added together give a triangular number (2485 = T₇₀).

The spelling of 6491836 in words is "six million, four hundred ninety-one thousand, eight hundred thirty-six".