10643445 has 24 divisors (see below), whose sum is σ = 19535256. Its totient is φ = 5342208.

The previous prime is 10643443. The next prime is 10643449. The reversal of 10643445 is 54434601.

10643445 is a `hidden beast` number, since 10 + 643 + 4 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2842596 + 7800849 = 1686^2 + 2793^2 .

It is not a de Polignac number, because 10643445 - 2¹ = 10643443 is a prime.

It is a super-2 number, since 2×10643445² = 226565842936050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6192 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (813969).

Almost surely, 2^10643445 is an apocalyptic number.

10643445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10643445 is a deficient number, since it is larger than the sum of its proper divisors (8891811).

10643445 is a wasteful number, since it uses less digits than its factorization.

10643445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13941 (or 13938 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 10643445 is about 3262.4293095790. The cubic root of 10643445 is about 219.9686250023.

The spelling of 10643445 in words is "ten million, six hundred forty-three thousand, four hundred forty-five".