791021 has 8 divisors (see below), whose sum is σ = 986304. Its totient is φ = 616320.

The previous prime is 791017. The next prime is 791029. The reversal of 791021 is 120197.

791021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 791021 - 2² = 791017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 790984 and 791002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791029) 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, 5060 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (123288).

2⁷⁹¹⁰²¹ is an apocalyptic number.

It is an amenable number.

791021 is a deficient number, since it is larger than the sum of its proper divisors (195283).

791021 is a wasteful number, since it uses less digits than its factorization.

791021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 791021 is about 889.3936136492. The cubic root of 791021 is about 92.4831622627.

The spelling of 791021 in words is "seven hundred ninety-one thousand, twenty-one".