861946 has 8 divisors (see below), whose sum is σ = 1296864. Its totient is φ = 429660.

The previous prime is 861941. The next prime is 861947. The reversal of 861946 is 649168.

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

It is not an unprimeable number, because it can be changed into a prime (861941) 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, 921 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (162108).

2⁸⁶¹⁹⁴⁶ is an apocalyptic number.

861946 is a deficient number, since it is larger than the sum of its proper divisors (434918).

861946 is a wasteful number, since it uses less digits than its factorization.

861946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316.

The product of its digits is 10368, while the sum is 34.

The square root of 861946 is about 928.4104695661. The cubic root of 861946 is about 95.1685281889.

The spelling of 861946 in words is "eight hundred sixty-one thousand, nine hundred forty-six".