870361 has 4 divisors (see below), whose sum is σ = 876852. Its totient is φ = 863872.

The previous prime is 870341. The next prime is 870367. The reversal of 870361 is 163078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 455625 + 414736 = 675^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 870361 - 2⁵ = 870329 is a prime.

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

It is a Duffinian number.

870361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (870367) 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, 3040 + ... + 3313.

It is an arithmetic number, because the mean of its divisors is an integer number (219213).

2⁸⁷⁰³⁶¹ is an apocalyptic number.

It is an amenable number.

870361 is a deficient number, since it is larger than the sum of its proper divisors (6491).

870361 is a wasteful number, since it uses less digits than its factorization.

870361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 870361 is about 932.9314015510. The cubic root of 870361 is about 95.4772292960.

The spelling of 870361 in words is "eight hundred seventy thousand, three hundred sixty-one".