20463165 has 16 divisors (see below), whose sum is σ = 36379200. Its totient is φ = 10913616.

The previous prime is 20463139. The next prime is 20463181. The reversal of 20463165 is 56136402.

20463165 is a `hidden beast` number, since 20 + 4 + 631 + 6 + 5 = 666.

It is not a de Polignac number, because 20463165 - 2⁹ = 20462653 is a prime.

It is a super-2 number, since 2×20463165² = 837482243634450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75655 + ... + 75924.

It is an arithmetic number, because the mean of its divisors is an integer number (2273700).

Almost surely, 2^20463165 is an apocalyptic number.

It is an amenable number.

20463165 is a deficient number, since it is larger than the sum of its proper divisors (15916035).

20463165 is a wasteful number, since it uses less digits than its factorization.

20463165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151593 (or 151587 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20463165 is about 4523.6229949013. The cubic root of 20463165 is about 273.5211636125.

Adding to 20463165 its reverse (56136402), we get a palindrome (76599567).

The spelling of 20463165 in words is "twenty million, four hundred sixty-three thousand, one hundred sixty-five".