7999726 has 8 divisors (see below), whose sum is σ = 13713840. Its totient is φ = 3428448.

The previous prime is 7999711. The next prime is 7999727. The reversal of 7999726 is 6279997.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7999726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999727) 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, 285691 + ... + 285718.

It is an arithmetic number, because the mean of its divisors is an integer number (1714230).

Almost surely, 2^7999726 is an apocalyptic number.

7999726 is a deficient number, since it is larger than the sum of its proper divisors (5714114).

7999726 is a wasteful number, since it uses less digits than its factorization.

7999726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571418.

The product of its digits is 428652, while the sum is 49.

The square root of 7999726 is about 2828.3786875169. The cubic root of 7999726 is about 199.9977166406.

The spelling of 7999726 in words is "seven million, nine hundred ninety-nine thousand, seven hundred twenty-six".