6481994 has 8 divisors (see below), whose sum is σ = 9750180. Its totient is φ = 3231936.

The previous prime is 6481991. The next prime is 6481997. The reversal of 6481994 is 4991846.

It is an interprime number because it is at equal distance from previous prime (6481991) and next prime (6481997).

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 405769 = 2465^2 + 637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 3599 + ... + 5090.

Almost surely, 2^6481994 is an apocalyptic number.

6481994 is a deficient number, since it is larger than the sum of its proper divisors (3268186).

6481994 is a wasteful number, since it uses less digits than its factorization.

6481994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064.

The product of its digits is 62208, while the sum is 41.

The square root of 6481994 is about 2545.9760407357. The cubic root of 6481994 is about 186.4530713023.

The spelling of 6481994 in words is "six million, four hundred eighty-one thousand, nine hundred ninety-four".