220764047 has 4 divisors (see below), whose sum is σ = 252301776. Its totient is φ = 189226320.

The previous prime is 220764043. The next prime is 220764067. The reversal of 220764047 is 740467022.

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

It is a cyclic number.

It is not a de Polignac number, because 220764047 - 2² = 220764043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220764043) 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, 15768854 + ... + 15768867.

It is an arithmetic number, because the mean of its divisors is an integer number (63075444).

Almost surely, 2^220764047 is an apocalyptic number.

220764047 is a deficient number, since it is larger than the sum of its proper divisors (31537729).

220764047 is an equidigital number, since it uses as much as digits as its factorization.

220764047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31537728.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 220764047 is about 14858.1306697713. The cubic root of 220764047 is about 604.3791157816.

The spelling of 220764047 in words is "two hundred twenty million, seven hundred sixty-four thousand, forty-seven".