20675667 has 16 divisors (see below), whose sum is σ = 29957120. Its totient is φ = 12636000.

The previous prime is 20675663. The next prime is 20675693. The reversal of 20675667 is 76657602.

It is not a de Polignac number, because 20675667 - 2² = 20675663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20675663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4084 + ... + 7617.

It is an arithmetic number, because the mean of its divisors is an integer number (1872320).

Almost surely, 2^20675667 is an apocalyptic number.

20675667 is a deficient number, since it is larger than the sum of its proper divisors (9281453).

20675667 is a wasteful number, since it uses less digits than its factorization.

20675667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11754.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 20675667 is about 4547.0503625977. The cubic root of 20675667 is about 274.4647085860.

The spelling of 20675667 in words is "twenty million, six hundred seventy-five thousand, six hundred sixty-seven".