16795821 has 8 divisors (see below), whose sum is σ = 25593664. Its totient is φ = 9597600.

The previous prime is 16795783. The next prime is 16795861. The reversal of 16795821 is 12859761.

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

It is not a de Polignac number, because 16795821 - 2¹⁰ = 16794797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16795821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16795861) 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, 399880 + ... + 399921.

It is an arithmetic number, because the mean of its divisors is an integer number (3199208).

Almost surely, 2^16795821 is an apocalyptic number.

It is an amenable number.

16795821 is a deficient number, since it is larger than the sum of its proper divisors (8797843).

16795821 is an equidigital number, since it uses as much as digits as its factorization.

16795821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799811.

The product of its digits is 30240, while the sum is 39.

The square root of 16795821 is about 4098.2704888770. The cubic root of 16795821 is about 256.0945949653.

The spelling of 16795821 in words is "sixteen million, seven hundred ninety-five thousand, eight hundred twenty-one".