10644001 has 2 divisors, whose sum is σ = 10644002. Its totient is φ = 10644000.

The previous prime is 10643981. The next prime is 10644017. The reversal of 10644001 is 10044601.

It is a happy number.

It is an a-pointer prime, because the next prime (10644017) can be obtained adding 10644001 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 3326976 = 2705^2 + 1824^2 .

It is a cyclic number.

It is not a de Polignac number, because 10644001 - 2¹³ = 10635809 is a prime.

It is a super-2 number, since 2×10644001² = 226589514576002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10644041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5322000 + 5322001.

It is an arithmetic number, because the mean of its divisors is an integer number (5322001).

Almost surely, 2^10644001 is an apocalyptic number.

It is an amenable number.

10644001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10644001 is an equidigital number, since it uses as much as digits as its factorization.

10644001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 10644001 is about 3262.5145210405. The cubic root of 10644001 is about 219.9724552291.

Adding to 10644001 its reverse (10044601), we get a palindrome (20688602).

The spelling of 10644001 in words is "ten million, six hundred forty-four thousand, one".