20957675 has 12 divisors (see below), whose sum is σ = 26051160. Its totient is φ = 16725120.

The previous prime is 20957663. The next prime is 20957689. The reversal of 20957675 is 57675902.

It is not a de Polignac number, because 20957675 - 2⁴ = 20957659 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13331 + ... + 14819.

It is an arithmetic number, because the mean of its divisors is an integer number (2170930).

Almost surely, 2^20957675 is an apocalyptic number.

20957675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20957675 is a deficient number, since it is larger than the sum of its proper divisors (5093485).

20957675 is a wasteful number, since it uses less digits than its factorization.

20957675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 20957675 is about 4577.9553296204. The cubic root of 20957675 is about 275.7069414417.

The spelling of 20957675 in words is "twenty million, nine hundred fifty-seven thousand, six hundred seventy-five".