20682575 has 6 divisors (see below), whose sum is σ = 25646424. Its totient is φ = 16546040.

The previous prime is 20682569. The next prime is 20682587. The reversal of 20682575 is 57528602.

It is not a de Polignac number, because 20682575 - 2⁶ = 20682511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413627 + ... + 413676.

It is an arithmetic number, because the mean of its divisors is an integer number (4274404).

Almost surely, 2^20682575 is an apocalyptic number.

20682575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20682575 is a deficient number, since it is larger than the sum of its proper divisors (4963849).

20682575 is an equidigital number, since it uses as much as digits as its factorization.

20682575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827313 (or 827308 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 20682575 is about 4547.8099124744. The cubic root of 20682575 is about 274.4952725509.

The spelling of 20682575 in words is "twenty million, six hundred eighty-two thousand, five hundred seventy-five".