12664435 has 16 divisors (see below), whose sum is σ = 17427456. Its totient is φ = 8654688.

The previous prime is 12664423. The next prime is 12664447. The reversal of 12664435 is 53446621.

It is an interprime number because it is at equal distance from previous prime (12664423) and next prime (12664447).

It is not a de Polignac number, because 12664435 - 2⁷ = 12664307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12664397 and 12664406.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16674 + ... + 17416.

It is an arithmetic number, because the mean of its divisors is an integer number (1089216).

Almost surely, 2^12664435 is an apocalyptic number.

12664435 is a deficient number, since it is larger than the sum of its proper divisors (4763021).

12664435 is an equidigital number, since it uses as much as digits as its factorization.

12664435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242.

The product of its digits is 17280, while the sum is 31.

The square root of 12664435 is about 3558.7125480994. The cubic root of 12664435 is about 233.0926645489.

The spelling of 12664435 in words is "twelve million, six hundred sixty-four thousand, four hundred thirty-five".