20507675 has 12 divisors (see below), whose sum is σ = 25485720. Its totient is φ = 16369920.

The previous prime is 20507653. The next prime is 20507693. The reversal of 20507675 is 57670502.

It is a happy number.

It is not a de Polignac number, because 20507675 - 2⁸ = 20507419 is a prime.

It is an unprimeable number.

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, 21611 + ... + 22539.

It is an arithmetic number, because the mean of its divisors is an integer number (2123810).

Almost surely, 2^20507675 is an apocalyptic number.

20507675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20507675 is a deficient number, since it is larger than the sum of its proper divisors (4978045).

20507675 is an equidigital number, since it uses as much as digits as its factorization.

20507675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1817 counting only the distinct ones).

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

The square root of 20507675 is about 4528.5400517164. The cubic root of 20507675 is about 273.7193344993.

The spelling of 20507675 in words is "twenty million, five hundred seven thousand, six hundred seventy-five".