861370 has 8 divisors (see below), whose sum is σ = 1550484. Its totient is φ = 344544.

The previous prime is 861361. The next prime is 861391. The reversal of 861370 is 73168.

861370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 700569 + 160801 = 837^2 + 401^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 861370.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43059 + ... + 43078.

2⁸⁶¹³⁷⁰ is an apocalyptic number.

861370 is a deficient number, since it is larger than the sum of its proper divisors (689114).

861370 is a wasteful number, since it uses less digits than its factorization.

861370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86144.

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

The square root of 861370 is about 928.1002101066. The cubic root of 861370 is about 95.1473245066.

The spelling of 861370 in words is "eight hundred sixty-one thousand, three hundred seventy".