6403266 has 48 divisors (see below), whose sum is σ = 15170400. Its totient is φ = 1996488.

The previous prime is 6403219. The next prime is 6403273. The reversal of 6403266 is 6623046.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81015 + ... + 81093.

It is an arithmetic number, because the mean of its divisors is an integer number (316050).

Almost surely, 2^6403266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6403266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7585200).

6403266 is an abundant number, since it is smaller than the sum of its proper divisors (8767134).

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

6403266 is a wasteful number, since it uses less digits than its factorization.

6403266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 6403266 is about 2530.4675457314. The cubic root of 6403266 is about 185.6951301178.

The spelling of 6403266 in words is "six million, four hundred three thousand, two hundred sixty-six".