870073 has 4 divisors (see below), whose sum is σ = 884880. Its totient is φ = 855268.

The previous prime is 870059. The next prime is 870083. The reversal of 870073 is 370078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 870073 - 2¹³ = 861881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7315 + ... + 7432.

It is an arithmetic number, because the mean of its divisors is an integer number (221220).

2⁸⁷⁰⁰⁷³ is an apocalyptic number.

It is an amenable number.

870073 is a deficient number, since it is larger than the sum of its proper divisors (14807).

870073 is a wasteful number, since it uses less digits than its factorization.

870073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14806.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 870073 is about 932.7770365956. Note that the first 3 decimals coincide. The cubic root of 870073 is about 95.4666970856.

The spelling of 870073 in words is "eight hundred seventy thousand, seventy-three".