6436121 has 2 divisors, whose sum is σ = 6436122. Its totient is φ = 6436120.

The previous prime is 6436103. The next prime is 6436147. The reversal of 6436121 is 1216346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 2768896 = 1915^2 + 1664^2 .

It is a cyclic number.

It is not a de Polignac number, because 6436121 - 2¹⁰ = 6435097 is a prime.

It is not a weakly prime, because it can be changed into another prime (6436151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218060 + 3218061.

It is an arithmetic number, because the mean of its divisors is an integer number (3218061).

Almost surely, 2^6436121 is an apocalyptic number.

It is an amenable number.

6436121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6436121 is an equidigital number, since it uses as much as digits as its factorization.

6436121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 6436121 is about 2536.9511229032. The cubic root of 6436121 is about 186.0121875083.

The spelling of 6436121 in words is "six million, four hundred thirty-six thousand, one hundred twenty-one".