20570675 has 12 divisors (see below), whose sum is σ = 25890456. Its totient is φ = 16209600.

The previous prime is 20570653. The next prime is 20570677. The reversal of 20570675 is 57607502.

It is a happy number.

It is not a de Polignac number, because 20570675 - 2⁸ = 20570419 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20570677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4466 + ... + 7815.

It is an arithmetic number, because the mean of its divisors is an integer number (2157538).

Almost surely, 2^20570675 is an apocalyptic number.

20570675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20570675 is a deficient number, since it is larger than the sum of its proper divisors (5319781).

20570675 is a wasteful number, since it uses less digits than its factorization.

20570675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358 (or 12353 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 20570675 is about 4535.4906019085. The cubic root of 20570675 is about 273.9993384466. Note that the first 3 decimals are identical.

The spelling of 20570675 in words is "twenty million, five hundred seventy thousand, six hundred seventy-five".