11634649 has 4 divisors (see below), whose sum is σ = 12529636. Its totient is φ = 10739664.

The previous prime is 11634643. The next prime is 11634653. The reversal of 11634649 is 94643611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94643611 = 59 ⋅1604129.

It can be written as a sum of positive squares in 2 ways, for example, as 6594624 + 5040025 = 2568^2 + 2245^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11634649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11634643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447474 + ... + 447499.

It is an arithmetic number, because the mean of its divisors is an integer number (3132409).

Almost surely, 2^11634649 is an apocalyptic number.

It is an amenable number.

11634649 is a deficient number, since it is larger than the sum of its proper divisors (894987).

11634649 is an equidigital number, since it uses as much as digits as its factorization.

11634649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894986.

The product of its digits is 15552, while the sum is 34.

The square root of 11634649 is about 3410.9601287614. The cubic root of 11634649 is about 226.5954031547.

The spelling of 11634649 in words is "eleven million, six hundred thirty-four thousand, six hundred forty-nine".