20677267 has 4 divisors (see below), whose sum is σ = 22267840. Its totient is φ = 19086696.

The previous prime is 20677247. The next prime is 20677271. The reversal of 20677267 is 76277602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20677267 - 2²³ = 12288659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20677247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795267 + ... + 795292.

It is an arithmetic number, because the mean of its divisors is an integer number (5566960).

Almost surely, 2^20677267 is an apocalyptic number.

20677267 is a deficient number, since it is larger than the sum of its proper divisors (1590573).

20677267 is a wasteful number, since it uses less digits than its factorization.

20677267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590572.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 20677267 is about 4547.2262974257. The cubic root of 20677267 is about 274.4717882803.

The spelling of 20677267 in words is "twenty million, six hundred seventy-seven thousand, two hundred sixty-seven".