10220643 has 12 divisors (see below), whose sum is σ = 14790880. Its totient is φ = 6800976.

The previous prime is 10220597. The next prime is 10220647. The reversal of 10220643 is 34602201.

It is a happy number.

10220643 is a `hidden beast` number, since 1 + 0 + 2 + 20 + 643 = 666.

It is not a de Polignac number, because 10220643 - 2⁸ = 10220387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10220647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8805 + ... + 9897.

Almost surely, 2^10220643 is an apocalyptic number.

10220643 is a deficient number, since it is larger than the sum of its proper divisors (4570237).

10220643 is a wasteful number, since it uses less digits than its factorization.

10220643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 10220643 is about 3196.9740380554. The cubic root of 10220643 is about 217.0164923367.

Adding to 10220643 its reverse (34602201), we get a palindrome (44822844).

The spelling of 10220643 in words is "ten million, two hundred twenty thousand, six hundred forty-three".