7168021 has 8 divisors (see below), whose sum is σ = 8208320. Its totient is φ = 6131808.

The previous prime is 7168001. The next prime is 7168069. The reversal of 7168021 is 1208617.

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 7168021 - 2⁹ = 7167509 is a prime.

It is a Duffinian number.

7168021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7168001) 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, 5785 + ... + 6913.

It is an arithmetic number, because the mean of its divisors is an integer number (1026040).

Almost surely, 2^7168021 is an apocalyptic number.

It is an amenable number.

7168021 is a deficient number, since it is larger than the sum of its proper divisors (1040299).

7168021 is a wasteful number, since it uses less digits than its factorization.

7168021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 7168021 is about 2677.3160067500. The cubic root of 7168021 is about 192.8115694262.

The spelling of 7168021 in words is "seven million, one hundred sixty-eight thousand, twenty-one".