6481993 has 16 divisors (see below), whose sum is σ = 7879680. Its totient is φ = 5213376.

The previous prime is 6481991. The next prime is 6481997. The reversal of 6481993 is 3991846.

It is not a de Polignac number, because 6481993 - 2¹ = 6481991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6481991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7080 + ... + 7942.

It is an arithmetic number, because the mean of its divisors is an integer number (492480).

Almost surely, 2^6481993 is an apocalyptic number.

It is an amenable number.

6481993 is a deficient number, since it is larger than the sum of its proper divisors (1397687).

6481993 is a wasteful number, since it uses less digits than its factorization.

6481993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its digits is 46656, while the sum is 40.

The square root of 6481993 is about 2545.9758443473. The cubic root of 6481993 is about 186.4530617141.

The spelling of 6481993 in words is "six million, four hundred eighty-one thousand, nine hundred ninety-three".