7016021 has 4 divisors (see below), whose sum is σ = 7022112. Its totient is φ = 7009932.

The previous prime is 7016017. The next prime is 7016029. The reversal of 7016021 is 1206107.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7016021 - 2² = 7016017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7016029) 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, 731 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (1755528).

Almost surely, 2^7016021 is an apocalyptic number.

It is an amenable number.

7016021 is a deficient number, since it is larger than the sum of its proper divisors (6091).

7016021 is a wasteful number, since it uses less digits than its factorization.

7016021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 7016021 is about 2648.7772650791. Note that the first 3 decimals coincide. The cubic root of 7016021 is about 191.4389455123.

The spelling of 7016021 in words is "seven million, sixteen thousand, twenty-one".