20412663 has 8 divisors (see below), whose sum is σ = 28094976. Its totient is φ = 13169400.

The previous prime is 20412649. The next prime is 20412671. The reversal of 20412663 is 36621402.

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

It is not a de Polignac number, because 20412663 - 2⁴ = 20412647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109653 + ... + 109838.

It is an arithmetic number, because the mean of its divisors is an integer number (3511872).

Almost surely, 2^20412663 is an apocalyptic number.

20412663 is a deficient number, since it is larger than the sum of its proper divisors (7682313).

20412663 is a wasteful number, since it uses less digits than its factorization.

20412663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219525.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20412663 is about 4518.0375164445. The cubic root of 20412663 is about 273.2959663705.

The spelling of 20412663 in words is "twenty million, four hundred twelve thousand, six hundred sixty-three".