16321797 has 16 divisors (see below), whose sum is σ = 24360000. Its totient is φ = 10800432.

The previous prime is 16321787. The next prime is 16321801. The reversal of 16321797 is 79712361.

It is a happy number.

16321797 is a `hidden beast` number, since 1 + 632 + 17 + 9 + 7 = 666.

It is not a de Polignac number, because 16321797 - 2⁶ = 16321733 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16321787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1579 + ... + 5927.

It is an arithmetic number, because the mean of its divisors is an integer number (1522500).

Almost surely, 2^16321797 is an apocalyptic number.

It is an amenable number.

16321797 is a deficient number, since it is larger than the sum of its proper divisors (8038203).

16321797 is a wasteful number, since it uses less digits than its factorization.

16321797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4491 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 16321797 is about 4040.0243811145. The cubic root of 16321797 is about 253.6623378102.

The spelling of 16321797 in words is "sixteen million, three hundred twenty-one thousand, seven hundred ninety-seven".