6481940 has 12 divisors (see below), whose sum is σ = 13612116. Its totient is φ = 2592768.

The previous prime is 6481939. The next prime is 6481957. The reversal of 6481940 is 491846.

6481940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 712336 + 5769604 = 844^2 + 2402^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6481897 and 6481906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162029 + ... + 162068.

It is an arithmetic number, because the mean of its divisors is an integer number (1134343).

Almost surely, 2^6481940 is an apocalyptic number.

It is an amenable number.

6481940 is an abundant number, since it is smaller than the sum of its proper divisors (7130176).

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

6481940 is a wasteful number, since it uses less digits than its factorization.

6481940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324106 (or 324104 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6481940 is about 2545.9654357434. The cubic root of 6481940 is about 186.4525535350.

The spelling of 6481940 in words is "six million, four hundred eighty-one thousand, nine hundred forty".