872818247 has 8 divisors (see below), whose sum is σ = 1018730496. Its totient is φ = 732211992.

The previous prime is 872818241. The next prime is 872818259. The reversal of 872818247 is 742818278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 872818247 - 2⁴ = 872818231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872818241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1326143 + ... + 1326800.

It is an arithmetic number, because the mean of its divisors is an integer number (127341312).

Almost surely, 2^872818247 is an apocalyptic number.

872818247 is a deficient number, since it is larger than the sum of its proper divisors (145912249).

872818247 is a wasteful number, since it uses less digits than its factorization.

872818247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652997.

The product of its digits is 401408, while the sum is 47.

The square root of 872818247 is about 29543.4975417604. The cubic root of 872818247 is about 955.6699691052.

The spelling of 872818247 in words is "eight hundred seventy-two million, eight hundred eighteen thousand, two hundred forty-seven".