20166365 has 8 divisors (see below), whose sum is σ = 24230880. Its totient is φ = 16112272.

The previous prime is 20166359. The next prime is 20166371. The reversal of 20166365 is 56366102.

It is an interprime number because it is at equal distance from previous prime (20166359) and next prime (20166371).

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

It is a cyclic number.

It is not a de Polignac number, because 20166365 - 2¹⁸ = 19904221 is a prime.

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, 2606 + ... + 6864.

It is an arithmetic number, because the mean of its divisors is an integer number (3028860).

Almost surely, 2^20166365 is an apocalyptic number.

It is an amenable number.

20166365 is a deficient number, since it is larger than the sum of its proper divisors (4064515).

20166365 is an equidigital number, since it uses as much as digits as its factorization.

20166365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 20166365 is about 4490.6976072766. The cubic root of 20166365 is about 272.1923245120.

It can be divided in two parts, 201 and 66365, that added together give a palindrome (66566).

The spelling of 20166365 in words is "twenty million, one hundred sixty-six thousand, three hundred sixty-five".