11647481 has 8 divisors (see below), whose sum is σ = 11884224. Its totient is φ = 11412720.

The previous prime is 11647477. The next prime is 11647483. The reversal of 11647481 is 18474611.

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 11647481 - 2² = 11647477 is a prime.

It is a super-2 number, since 2×11647481² = 271327627290722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11647483) 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, 17291 + ... + 17951.

It is an arithmetic number, because the mean of its divisors is an integer number (1485528).

Almost surely, 2^11647481 is an apocalyptic number.

It is an amenable number.

11647481 is a deficient number, since it is larger than the sum of its proper divisors (236743).

11647481 is an equidigital number, since it uses as much as digits as its factorization.

11647481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

The product of its digits is 5376, while the sum is 32.

The square root of 11647481 is about 3412.8406057125. The cubic root of 11647481 is about 226.6786775162.

The spelling of 11647481 in words is "eleven million, six hundred forty-seven thousand, four hundred eighty-one".