11643545 has 8 divisors (see below), whose sum is σ = 14269824. Its totient is φ = 9116464.

The previous prime is 11643539. The next prime is 11643547. The reversal of 11643545 is 54534611.

It is a happy number.

11643545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11643545 - 2⁶ = 11643481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11643547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24539 + ... + 25008.

It is an arithmetic number, because the mean of its divisors is an integer number (1783728).

Almost surely, 2^11643545 is an apocalyptic number.

It is an amenable number.

11643545 is a deficient number, since it is larger than the sum of its proper divisors (2626279).

11643545 is an equidigital number, since it uses as much as digits as its factorization.

11643545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49599.

The product of its digits is 7200, while the sum is 29.

The square root of 11643545 is about 3412.2639112472. The cubic root of 11643545 is about 226.6531410134.

The spelling of 11643545 in words is "eleven million, six hundred forty-three thousand, five hundred forty-five".