870434 has 8 divisors (see below), whose sum is σ = 1382508. Its totient is φ = 409600.

The previous prime is 870433. The next prime is 870437. The reversal of 870434 is 434078.

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 225625 = 803^2 + 475^2 .

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

It is not an unprimeable number, because it can be changed into a prime (870431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12767 + ... + 12834.

2⁸⁷⁰⁴³⁴ is an apocalyptic number.

870434 is a deficient number, since it is larger than the sum of its proper divisors (512074).

870434 is a wasteful number, since it uses less digits than its factorization.

870434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25620.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 870434 is about 932.9705247220. The cubic root of 870434 is about 95.4798985497.

It can be divided in two parts, 8704 and 34, that multiplied together give a square (295936 = 544²).

The spelling of 870434 in words is "eight hundred seventy thousand, four hundred thirty-four".