6862644 has 60 divisors (see below), whose sum is σ = 18295200. Its totient is φ = 2242512.

The previous prime is 6862643. The next prime is 6862693. The reversal of 6862644 is 4462686.

It is a happy number.

6862644 is a `hidden beast` number, since 6 + 8 + 6 + 2 + 644 = 666.

6862644 is digitally balanced in base 4 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6862599 and 6862608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6862643) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18937 + ... + 19295.

It is an arithmetic number, because the mean of its divisors is an integer number (304920).

Almost surely, 2^6862644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6862644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9147600).

6862644 is an abundant number, since it is smaller than the sum of its proper divisors (11432556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6862644 is a wasteful number, since it uses less digits than its factorization.

6862644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 423 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 6862644 is about 2619.6648640618. The cubic root of 6862644 is about 190.0336413192.

The spelling of 6862644 in words is "six million, eight hundred sixty-two thousand, six hundred forty-four".