12173664 has 48 divisors (see below), whose sum is σ = 32184432. Its totient is φ = 4028928.

The previous prime is 12173657. The next prime is 12173671. The reversal of 12173664 is 46637121.

It is an interprime number because it is at equal distance from previous prime (12173657) and next prime (12173671).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16242 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (670509).

Almost surely, 2^12173664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12173664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16092216).

12173664 is an abundant number, since it is smaller than the sum of its proper divisors (20010768).

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

12173664 is a wasteful number, since it uses less digits than its factorization.

12173664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 911 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 12173664 is about 3489.0778151254. The cubic root of 12173664 is about 230.0419835143.

The spelling of 12173664 in words is "twelve million, one hundred seventy-three thousand, six hundred sixty-four".