18066465 has 12 divisors (see below), whose sum is σ = 31315284. Its totient is φ = 9635424.

The previous prime is 18066463. The next prime is 18066467. The reversal of 18066465 is 56466081.

18066465 is a `hidden beast` number, since 1 + 8 + 0 + 6 + 646 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (18066463) and next prime (18066467).

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 10265616 = 2793^2 + 3204^2 .

It is not a de Polignac number, because 18066465 - 2¹ = 18066463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18066463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200694 + ... + 200783.

It is an arithmetic number, because the mean of its divisors is an integer number (2609607).

Almost surely, 2^18066465 is an apocalyptic number.

18066465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18066465 is a deficient number, since it is larger than the sum of its proper divisors (13248819).

18066465 is a wasteful number, since it uses less digits than its factorization.

18066465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401488 (or 401485 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 18066465 is about 4250.4664449917. The cubic root of 18066465 is about 262.3963127906.

The spelling of 18066465 in words is "eighteen million, sixty-six thousand, four hundred sixty-five".