10643544 has 24 divisors (see below), whose sum is σ = 28826460. Its totient is φ = 3547824.

The previous prime is 10643543. The next prime is 10643557. The reversal of 10643544 is 44534601.

10643544 is a `hidden beast` number, since 10 + 643 + 5 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×10643544² = 226570057759872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73842 + ... + 73985.

Almost surely, 2^10643544 is an apocalyptic number.

It is an amenable number.

10643544 is an abundant number, since it is smaller than the sum of its proper divisors (18182916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10643544 is a wasteful number, since it uses less digits than its factorization.

10643544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147839 (or 147832 counting only the distinct ones).

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

The square root of 10643544 is about 3262.4444822863. Note that the first 4 decimals coincide. The cubic root of 10643544 is about 219.9693070129.

The spelling of 10643544 in words is "ten million, six hundred forty-three thousand, five hundred forty-four".