6491394 has 64 divisors (see below), whose sum is σ = 17767680. Its totient is φ = 1710720.

The previous prime is 6491377. The next prime is 6491411. The reversal of 6491394 is 4931946.

6491394 is a `hidden beast` number, since 649 + 1 + 3 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (6491377) and next prime (6491411).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4254 + ... + 5574.

It is an arithmetic number, because the mean of its divisors is an integer number (277620).

Almost surely, 2^6491394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6491394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8883840).

6491394 is an abundant number, since it is smaller than the sum of its proper divisors (11276286).

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

6491394 is a wasteful number, since it uses less digits than its factorization.

6491394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1346 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6491394 is about 2547.8214223136. The cubic root of 6491394 is about 186.5431573846.

The spelling of 6491394 in words is "six million, four hundred ninety-one thousand, three hundred ninety-four".