11643455 has 4 divisors (see below), whose sum is σ = 13972152. Its totient is φ = 9314760.

The previous prime is 11643449. The next prime is 11643481. The reversal of 11643455 is 55434611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11643455 - 2¹² = 11639359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164341 + ... + 1164350.

It is an arithmetic number, because the mean of its divisors is an integer number (3493038).

Almost surely, 2^11643455 is an apocalyptic number.

11643455 is a deficient number, since it is larger than the sum of its proper divisors (2328697).

11643455 is an equidigital number, since it uses as much as digits as its factorization.

11643455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328696.

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

The square root of 11643455 is about 3412.2507234962. The cubic root of 11643455 is about 226.6525570321.

The spelling of 11643455 in words is "eleven million, six hundred forty-three thousand, four hundred fifty-five".