16764197 has 2 divisors, whose sum is σ = 16764198. Its totient is φ = 16764196.

The previous prime is 16764191. The next prime is 16764199. The reversal of 16764197 is 79146761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14984641 + 1779556 = 3871^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 16764197 - 2²⁰ = 15715621 is a prime.

Together with 16764199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16764191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8382098 + 8382099.

It is an arithmetic number, because the mean of its divisors is an integer number (8382099).

Almost surely, 2^16764197 is an apocalyptic number.

It is an amenable number.

16764197 is a deficient number, since it is larger than the sum of its proper divisors (1).

16764197 is an equidigital number, since it uses as much as digits as its factorization.

16764197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 16764197 is about 4094.4104581734. The cubic root of 16764197 is about 255.9337648061.

It can be divided in two parts, 16764 and 197, that added together give a palindrome (16961).

The spelling of 16764197 in words is "sixteen million, seven hundred sixty-four thousand, one hundred ninety-seven".