20087667 has 12 divisors (see below), whose sum is σ = 29055000. Its totient is φ = 13373568.

The previous prime is 20087653. The next prime is 20087701. The reversal of 20087667 is 76678002.

It is not a de Polignac number, because 20087667 - 2⁶ = 20087603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20087647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10348 + ... + 12134.

It is an arithmetic number, because the mean of its divisors is an integer number (2421250).

Almost surely, 2^20087667 is an apocalyptic number.

20087667 is a deficient number, since it is larger than the sum of its proper divisors (8967333).

20087667 is a wasteful number, since it uses less digits than its factorization.

20087667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3039 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 20087667 is about 4481.9267062280. The cubic root of 20087667 is about 271.8377916579.

The spelling of 20087667 in words is "twenty million, eighty-seven thousand, six hundred sixty-seven".