6393690 has 48 divisors (see below), whose sum is σ = 17503200. Its totient is φ = 1614816.

The previous prime is 6393661. The next prime is 6393691. The reversal of 6393690 is 963936.

It is a super-2 number, since 2×6393690² = 81758543632200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6393691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160 + ... + 3579.

It is an arithmetic number, because the mean of its divisors is an integer number (364650).

Almost surely, 2^6393690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6393690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8751600).

6393690 is an abundant number, since it is smaller than the sum of its proper divisors (11109510).

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

6393690 is a wasteful number, since it uses less digits than its factorization.

6393690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 6393690 is about 2528.5746973344. The cubic root of 6393690 is about 185.6025157271.

The spelling of 6393690 in words is "six million, three hundred ninety-three thousand, six hundred ninety".