6861944 has 8 divisors (see below), whose sum is σ = 12866160. Its totient is φ = 3430968.

The previous prime is 6861923. The next prime is 6861947. The reversal of 6861944 is 4491686.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 6861898 and 6861907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861947) by changing a digit.

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 as a sum of consecutive naturals, namely, 428864 + ... + 428879.

It is an arithmetic number, because the mean of its divisors is an integer number (1608270).

Almost surely, 2^6861944 is an apocalyptic number.

It is an amenable number.

6861944 is a deficient number, since it is larger than the sum of its proper divisors (6004216).

6861944 is a wasteful number, since it uses less digits than its factorization.

6861944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857749 (or 857745 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 6861944 is about 2619.5312557784. The cubic root of 6861944 is about 190.0271798605.

The spelling of 6861944 in words is "six million, eight hundred sixty-one thousand, nine hundred forty-four".