873220247 has 4 divisors (see below), whose sum is σ = 903331320. Its totient is φ = 843109176.

The previous prime is 873220241. The next prime is 873220273. The reversal of 873220247 is 742022378.

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 873220247 - 2¹⁰ = 873219223 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 (873220241) 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, 15055493 + ... + 15055550.

It is an arithmetic number, because the mean of its divisors is an integer number (225832830).

Almost surely, 2^873220247 is an apocalyptic number.

873220247 is a deficient number, since it is larger than the sum of its proper divisors (30111073).

873220247 is a wasteful number, since it uses less digits than its factorization.

873220247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30111072.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 873220247 is about 29550.3002861223. The cubic root of 873220247 is about 955.8166664512.

The spelling of 873220247 in words is "eight hundred seventy-three million, two hundred twenty thousand, two hundred forty-seven".