20064605 has 16 divisors (see below), whose sum is σ = 26568000. Its totient is φ = 14424960.

The previous prime is 20064593. The next prime is 20064631. The reversal of 20064605 is 50646002.

It is not a de Polignac number, because 20064605 - 2¹⁰ = 20063581 is a prime.

It is a super-3 number, since 3×20064605³ (a number of 23 digits) contains 333 as substring.

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, 2846 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (1660500).

Almost surely, 2^20064605 is an apocalyptic number.

It is an amenable number.

20064605 is a deficient number, since it is larger than the sum of its proper divisors (6503395).

20064605 is a wasteful number, since it uses less digits than its factorization.

20064605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20064605 is about 4479.3531899148. The cubic root of 20064605 is about 271.7337224329.

The spelling of 20064605 in words is "twenty million, sixty-four thousand, six hundred five".