8021743 has 8 divisors (see below), whose sum is σ = 8528000. Its totient is φ = 7523928.

The previous prime is 8021737. The next prime is 8021747. The reversal of 8021743 is 3471208.

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

It is a cyclic number.

It is not a de Polignac number, because 8021743 - 2⁹ = 8021231 is a prime.

It is a Duffinian number.

8021743 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (1066000).

Almost surely, 2^8021743 is an apocalyptic number.

8021743 is a deficient number, since it is larger than the sum of its proper divisors (506257).

8021743 is a wasteful number, since it uses less digits than its factorization.

8021743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8021743 is about 2832.2681723311. The cubic root of 8021743 is about 200.1810277620.

The spelling of 8021743 in words is "eight million, twenty-one thousand, seven hundred forty-three".