6464394 has 32 divisors (see below), whose sum is σ = 14616000. Its totient is φ = 2117232.

The previous prime is 6464387. The next prime is 6464401. The reversal of 6464394 is 4934646.

6464394 is a `hidden beast` number, since 6 + 4 + 643 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (6464387) and next prime (6464401).

It is a d-powerful number, because it can be written as 6² + 4 + 6⁸ + 4² + 3¹⁴ + 9³ + 4⁵ .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2172 + ... + 4200.

It is an arithmetic number, because the mean of its divisors is an integer number (456750).

Almost surely, 2^6464394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6464394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7308000).

6464394 is an abundant number, since it is smaller than the sum of its proper divisors (8151606).

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

6464394 is a wasteful number, since it uses less digits than its factorization.

6464394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2093 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6464394 is about 2542.5172565786. The cubic root of 6464394 is about 186.2841650161.

The spelling of 6464394 in words is "six million, four hundred sixty-four thousand, three hundred ninety-four".