20886077 has 4 divisors (see below), whose sum is σ = 20961756. Its totient is φ = 20810400.

The previous prime is 20886049. The next prime is 20886083. The reversal of 20886077 is 77068802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5354596 + 15531481 = 2314^2 + 3941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20886077 is a prime.

It is a super-3 number, since 3×20886077³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20886077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20886007) 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, 37424 + ... + 37977.

It is an arithmetic number, because the mean of its divisors is an integer number (5240439).

Almost surely, 2^20886077 is an apocalyptic number.

It is an amenable number.

20886077 is a deficient number, since it is larger than the sum of its proper divisors (75679).

20886077 is an equidigital number, since it uses as much as digits as its factorization.

20886077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75678.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 20886077 is about 4570.1287728028. The cubic root of 20886077 is about 275.3926160569.

The spelling of 20886077 in words is "twenty million, eight hundred eighty-six thousand, seventy-seven".