10643481 has 20 divisors (see below), whose sum is σ = 16069284. Its totient is φ = 7020000.

The previous prime is 10643467. The next prime is 10643483. The reversal of 10643481 is 18434601.

10643481 is a `hidden beast` number, since 10 + 643 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4473225 + 6170256 = 2115^2 + 2484^2 .

It is not a de Polignac number, because 10643481 - 2⁵ = 10643449 is a prime.

It is a super-2 number, since 2×10643481² = 226567375594722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643483) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7531 + ... + 8831.

Almost surely, 2^10643481 is an apocalyptic number.

It is an amenable number.

10643481 is a deficient number, since it is larger than the sum of its proper divisors (5425803).

10643481 is a wasteful number, since it uses less digits than its factorization.

10643481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 10643481 is about 3262.4348269352. The cubic root of 10643481 is about 219.9688730066.

The spelling of 10643481 in words is "ten million, six hundred forty-three thousand, four hundred eighty-one".