10021797 has 24 divisors (see below), whose sum is σ = 15412800. Its totient is φ = 6257088.

The previous prime is 10021777. The next prime is 10021819. The reversal of 10021797 is 79712001.

It is not a de Polignac number, because 10021797 - 2⁸ = 10021541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17329 + ... + 17897.

It is an arithmetic number, because the mean of its divisors is an integer number (642200).

Almost surely, 2^10021797 is an apocalyptic number.

It is an amenable number.

10021797 is a deficient number, since it is larger than the sum of its proper divisors (5391003).

10021797 is a wasteful number, since it uses less digits than its factorization.

10021797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 10021797 is about 3165.7221924863. The cubic root of 10021797 is about 215.5998894514.

Adding to 10021797 its reverse (79712001), we get a palindrome (89733798).

The spelling of 10021797 in words is "ten million, twenty-one thousand, seven hundred ninety-seven".