870278 has 4 divisors (see below), whose sum is σ = 1305420. Its totient is φ = 435138.

The previous prime is 870271. The next prime is 870283. The reversal of 870278 is 872078.

It is a happy number.

870278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870278.

It is not an unprimeable number, because it can be changed into a prime (870271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217568 + ... + 217571.

It is an arithmetic number, because the mean of its divisors is an integer number (326355).

2⁸⁷⁰²⁷⁸ is an apocalyptic number.

870278 is a deficient number, since it is larger than the sum of its proper divisors (435142).

870278 is a wasteful number, since it uses less digits than its factorization.

870278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435141.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 870278 is about 932.8869170484. The cubic root of 870278 is about 95.4741942098.

It can be divided in two parts, 870 and 278, that multiplied together give a triangular number (241860 = T₆₉₅).

The spelling of 870278 in words is "eight hundred seventy thousand, two hundred seventy-eight".