20470675 has 6 divisors (see below), whose sum is σ = 25383668. Its totient is φ = 16376520.

The previous prime is 20470651. The next prime is 20470679. The reversal of 20470675 is 57607402.

It is not a de Polignac number, because 20470675 - 2⁷ = 20470547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20470679) 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 5 ways as a sum of consecutive naturals, for example, 409389 + ... + 409438.

Almost surely, 2^20470675 is an apocalyptic number.

20470675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20470675 is a deficient number, since it is larger than the sum of its proper divisors (4912993).

20470675 is an equidigital number, since it uses as much as digits as its factorization.

20470675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818837 (or 818832 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 20470675 is about 4524.4530056129. The cubic root of 20470675 is about 273.5546203578.

The spelling of 20470675 in words is "twenty million, four hundred seventy thousand, six hundred seventy-five".