861148 has 12 divisors (see below), whose sum is σ = 1513512. Its totient is φ = 428720.

The previous prime is 861139. The next prime is 861163. The reversal of 861148 is 841168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611 + ... + 2077.

It is an arithmetic number, because the mean of its divisors is an integer number (126126).

2⁸⁶¹¹⁴⁸ is an apocalyptic number.

It is an amenable number.

861148 is a deficient number, since it is larger than the sum of its proper divisors (652364).

861148 is a wasteful number, since it uses less digits than its factorization.

861148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 930 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 861148 is about 927.9806032456. The cubic root of 861148 is about 95.1391497304.

The spelling of 861148 in words is "eight hundred sixty-one thousand, one hundred forty-eight".