872147 has 4 divisors (see below), whose sum is σ = 874080. Its totient is φ = 870216.

The previous prime is 872143. The next prime is 872149. The reversal of 872147 is 741278.

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 872147 - 2² = 872143 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872141) 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, 113 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (218520).

2⁸⁷²¹⁴⁷ is an apocalyptic number.

872147 is a deficient number, since it is larger than the sum of its proper divisors (1933).

872147 is a wasteful number, since it uses less digits than its factorization.

872147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932.

The product of its digits is 3136, while the sum is 29.

The square root of 872147 is about 933.8881089295. Note that the first 3 decimals coincide. The cubic root of 872147 is about 95.5424918042.

The spelling of 872147 in words is "eight hundred seventy-two thousand, one hundred forty-seven".