861475 has 12 divisors (see below), whose sum is σ = 1131624. Its totient is φ = 648320.

The previous prime is 861439. The next prime is 861491. The reversal of 861475 is 574168.

It is not a de Polignac number, because 861475 - 2⁷ = 861347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (94302).

2⁸⁶¹⁴⁷⁵ is an apocalyptic number.

861475 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

861475 is a deficient number, since it is larger than the sum of its proper divisors (270149).

861475 is a wasteful number, since it uses less digits than its factorization.

861475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2049 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 861475 is about 928.1567755503. The cubic root of 861475 is about 95.1511904656.

The spelling of 861475 in words is "eight hundred sixty-one thousand, four hundred seventy-five".