16764947 has 4 divisors (see below), whose sum is σ = 17121696. Its totient is φ = 16408200.

The previous prime is 16764901. The next prime is 16764949. The reversal of 16764947 is 74946761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16764947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16764898 and 16764907.

It is not an unprimeable number, because it can be changed into a prime (16764949) 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, 178304 + ... + 178397.

It is an arithmetic number, because the mean of its divisors is an integer number (4280424).

Almost surely, 2^16764947 is an apocalyptic number.

16764947 is a deficient number, since it is larger than the sum of its proper divisors (356749).

16764947 is an equidigital number, since it uses as much as digits as its factorization.

16764947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356748.

The product of its digits is 254016, while the sum is 44.

The square root of 16764947 is about 4094.5020454263. The cubic root of 16764947 is about 255.9375814212.

The spelling of 16764947 in words is "sixteen million, seven hundred sixty-four thousand, nine hundred forty-seven".