20620265 has 8 divisors (see below), whose sum is σ = 24779328. Its totient is φ = 16472880.

The previous prime is 20620241. The next prime is 20620283. The reversal of 20620265 is 56202602.

It is a happy number.

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

It is not a de Polignac number, because 20620265 - 2¹⁰ = 20619241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20620265.

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, 1610 + ... + 6620.

It is an arithmetic number, because the mean of its divisors is an integer number (3097416).

Almost surely, 2^20620265 is an apocalyptic number.

It is an amenable number.

20620265 is a deficient number, since it is larger than the sum of its proper divisors (4159063).

20620265 is an equidigital number, since it uses as much as digits as its factorization.

20620265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5839.

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

The square root of 20620265 is about 4540.9541948802. The cubic root of 20620265 is about 274.2193397051.

Adding to 20620265 its reverse (56202602), we get a palindrome (76822867).

The spelling of 20620265 in words is "twenty million, six hundred twenty thousand, two hundred sixty-five".