870535 has 8 divisors (see below), whose sum is σ = 1069200. Its totient is φ = 680064.

The previous prime is 870533. The next prime is 870547. The reversal of 870535 is 535078.

870535 = 55² + 56² + ... + 140².

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 870535 - 2¹ = 870533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870533) 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, 1810 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (133650).

2⁸⁷⁰⁵³⁵ is an apocalyptic number.

870535 is a deficient number, since it is larger than the sum of its proper divisors (198665).

870535 is a wasteful number, since it uses less digits than its factorization.

870535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 870535 is about 933.0246513356. The cubic root of 870535 is about 95.4835913806.

The spelling of 870535 in words is "eight hundred seventy thousand, five hundred thirty-five".