20106667 has 8 divisors (see below), whose sum is σ = 23256576. Its totient is φ = 17026152.

The previous prime is 20106661. The next prime is 20106673. The reversal of 20106667 is 76660102.

It is an interprime number because it is at equal distance from previous prime (20106661) and next prime (20106673).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20106667 - 2³ = 20106659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20106661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16723 + ... + 17884.

It is an arithmetic number, because the mean of its divisors is an integer number (2907072).

Almost surely, 2^20106667 is an apocalyptic number.

20106667 is a deficient number, since it is larger than the sum of its proper divisors (3149909).

20106667 is an equidigital number, since it uses as much as digits as its factorization.

20106667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34697.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20106667 is about 4484.0458293822. The cubic root of 20106667 is about 271.9234709369.

Adding to 20106667 its reverse (76660102), we get a palindrome (96766769).

The spelling of 20106667 in words is "twenty million, one hundred six thousand, six hundred sixty-seven".