13664958 has 8 divisors (see below), whose sum is σ = 27329928. Its totient is φ = 4554984.

The previous prime is 13664953. The next prime is 13664969. The reversal of 13664958 is 85946631.

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

13664958 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13664953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138741 + ... + 1138752.

It is an arithmetic number, because the mean of its divisors is an integer number (3416241).

Almost surely, 2^13664958 is an apocalyptic number.

13664958 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13664958 is a wasteful number, since it uses less digits than its factorization.

13664958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277498.

The product of its digits is 155520, while the sum is 42.

The square root of 13664958 is about 3696.6143969854. The cubic root of 13664958 is about 239.0760657260.

The spelling of 13664958 in words is "thirteen million, six hundred sixty-four thousand, nine hundred fifty-eight".