20675675 has 12 divisors (see below), whose sum is σ = 25812336. Its totient is φ = 16428000.

The previous prime is 20675663. The next prime is 20675693. The reversal of 20675675 is 57657602.

It is not a de Polignac number, because 20675675 - 2¹⁴ = 20659291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1037 + ... + 6513.

It is an arithmetic number, because the mean of its divisors is an integer number (2151028).

Almost surely, 2^20675675 is an apocalyptic number.

20675675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20675675 is a deficient number, since it is larger than the sum of its proper divisors (5136661).

20675675 is a wasteful number, since it uses less digits than its factorization.

20675675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638 (or 5633 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 20675675 is about 4547.0512422888. The cubic root of 20675675 is about 274.4647439853.

The spelling of 20675675 in words is "twenty million, six hundred seventy-five thousand, six hundred seventy-five".