6442726 has 8 divisors (see below), whose sum is σ = 9714744. Its totient is φ = 3204480.

The previous prime is 6442721. The next prime is 6442763. The reversal of 6442726 is 6272446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6442726² = 83017436622152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7960 + ... + 8731.

It is an arithmetic number, because the mean of its divisors is an integer number (1214343).

Almost surely, 2^6442726 is an apocalyptic number.

6442726 is a deficient number, since it is larger than the sum of its proper divisors (3272018).

6442726 is a wasteful number, since it uses less digits than its factorization.

6442726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16886.

The product of its digits is 16128, while the sum is 31.

The square root of 6442726 is about 2538.2525485066. The cubic root of 6442726 is about 186.0757967566.

The spelling of 6442726 in words is "six million, four hundred forty-two thousand, seven hundred twenty-six".