6860421 has 12 divisors (see below), whose sum is σ = 9934860. Its totient is φ = 4561920.

The previous prime is 6860419. The next prime is 6860437. The reversal of 6860421 is 1240686.

6860421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1028196 + 5832225 = 1014^2 + 2415^2 .

It is not a de Polignac number, because 6860421 - 2¹ = 6860419 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6860471) 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 in 11 ways as a sum of consecutive naturals, for example, 4165 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (827905).

Almost surely, 2^6860421 is an apocalyptic number.

It is an amenable number.

6860421 is a deficient number, since it is larger than the sum of its proper divisors (3074439).

6860421 is a wasteful number, since it uses less digits than its factorization.

6860421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 1953 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 6860421 is about 2619.2405387822. The cubic root of 6860421 is about 190.0131200543.

The spelling of 6860421 in words is "six million, eight hundred sixty thousand, four hundred twenty-one".