862646 has 8 divisors (see below), whose sum is σ = 1301664. Its totient is φ = 428760.

The previous prime is 862633. The next prime is 862649. The reversal of 862646 is 646268.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862649) by changing a digit.

862646 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 830 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (162708).

2⁸⁶²⁶⁴⁶ is an apocalyptic number.

862646 is a deficient number, since it is larger than the sum of its proper divisors (439018).

862646 is a wasteful number, since it uses less digits than its factorization.

862646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566.

The product of its digits is 13824, while the sum is 32.

The square root of 862646 is about 928.7873814819. The cubic root of 862646 is about 95.1942838410.

The spelling of 862646 in words is "eight hundred sixty-two thousand, six hundred forty-six".