20880067 has 8 divisors (see below), whose sum is σ = 23464224. Its totient is φ = 18435648.

The previous prime is 20880043. The next prime is 20880071. The reversal of 20880067 is 76008802.

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 20880067 - 2¹⁹ = 20355779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20880007) 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, 34618 + ... + 35215.

It is an arithmetic number, because the mean of its divisors is an integer number (2933028).

Almost surely, 2^20880067 is an apocalyptic number.

20880067 is a deficient number, since it is larger than the sum of its proper divisors (2584157).

20880067 is a wasteful number, since it uses less digits than its factorization.

20880067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69869.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 20880067 is about 4569.4711947883. The cubic root of 20880067 is about 275.3661986433.

Adding to 20880067 its reverse (76008802), we get a palindrome (96888869).

The spelling of 20880067 in words is "twenty million, eight hundred eighty thousand, sixty-seven".