6403722 has 64 divisors (see below), whose sum is σ = 15120000. Its totient is φ = 1790208.

The previous prime is 6403711. The next prime is 6403723. The reversal of 6403722 is 2273046.

It is a junction number, because it is equal to n+sod(n) for n = 6403692 and 6403701.

It is not an unprimeable number, because it can be changed into a prime (6403723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42904 + ... + 43052.

It is an arithmetic number, because the mean of its divisors is an integer number (236250).

Almost surely, 2^6403722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6403722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7560000).

6403722 is an abundant number, since it is smaller than the sum of its proper divisors (8716278).

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

6403722 is a wasteful number, since it uses less digits than its factorization.

6403722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 6403722 is about 2530.5576460535. The cubic root of 6403722 is about 185.6995380230.

Adding to 6403722 its reverse (2273046), we get a palindrome (8676768).

The spelling of 6403722 in words is "six million, four hundred three thousand, seven hundred twenty-two".