18060663 has 4 divisors (see below), whose sum is σ = 24080888. Its totient is φ = 12040440.

The previous prime is 18060661. The next prime is 18060671. The reversal of 18060663 is 36606081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36606081 = 3 ⋅12202027.

It is not a de Polignac number, because 18060663 - 2¹ = 18060661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18060663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18060661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010108 + ... + 3010113.

It is an arithmetic number, because the mean of its divisors is an integer number (6020222).

Almost surely, 2^18060663 is an apocalyptic number.

18060663 is a deficient number, since it is larger than the sum of its proper divisors (6020225).

18060663 is an equidigital number, since it uses as much as digits as its factorization.

18060663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020224.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 18060663 is about 4249.7838768577. The cubic root of 18060663 is about 262.3682204768.

The spelling of 18060663 in words is "eighteen million, sixty thousand, six hundred sixty-three".