18674665 has 8 divisors (see below), whose sum is σ = 22462848. Its totient is φ = 14904240.

The previous prime is 18674659. The next prime is 18674671. The reversal of 18674665 is 56647681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18674659) and next prime (18674671).

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

It is not a de Polignac number, because 18674665 - 2³ = 18674657 is a prime.

It is a super-2 number, since 2×18674665² = 697486225724450, which contains 22 as substring.

It is a Duffinian 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, 2001 + ... + 6430.

It is an arithmetic number, because the mean of its divisors is an integer number (2807856).

Almost surely, 2^18674665 is an apocalyptic number.

It is an amenable number.

18674665 is a deficient number, since it is larger than the sum of its proper divisors (3788183).

18674665 is an equidigital number, since it uses as much as digits as its factorization.

18674665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879.

The product of its digits is 241920, while the sum is 43.

The square root of 18674665 is about 4321.4193270267. The cubic root of 18674665 is about 265.3083630043.

The spelling of 18674665 in words is "eighteen million, six hundred seventy-four thousand, six hundred sixty-five".