6861401 has 2 divisors, whose sum is σ = 6861402. Its totient is φ = 6861400.

The previous prime is 6861397. The next prime is 6861409. The reversal of 6861401 is 1041686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 225625 = 2576^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 6861401 - 2² = 6861397 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (6861409) 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, 3430700 + 3430701.

It is an arithmetic number, because the mean of its divisors is an integer number (3430701).

Almost surely, 2^6861401 is an apocalyptic number.

It is an amenable number.

6861401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6861401 is an equidigital number, since it uses as much as digits as its factorization.

6861401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 6861401 is about 2619.4276092307. The cubic root of 6861401 is about 190.0221673121.

The spelling of 6861401 in words is "six million, eight hundred sixty-one thousand, four hundred one".