6861444 has 24 divisors (see below), whose sum is σ = 16205280. Its totient is φ = 2259592.

The previous prime is 6861431. The next prime is 6861461. The reversal of 6861444 is 4441686.

Its product of digits (18432) is a multiple of the sum of its prime factors (256).

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82627 + ... + 82709.

It is an arithmetic number, because the mean of its divisors is an integer number (675220).

Almost surely, 2^6861444 is an apocalyptic number.

It is an amenable number.

6861444 is an abundant number, since it is smaller than the sum of its proper divisors (9343836).

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

6861444 is an frugal number, since it uses more digits than its factorization.

6861444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 88 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 6861444 is about 2619.4358171179. The cubic root of 6861444 is about 190.0225642639.

The spelling of 6861444 in words is "six million, eight hundred sixty-one thousand, four hundred forty-four".