20955677 has 8 divisors (see below), whose sum is σ = 21222432. Its totient is φ = 20690800.

The previous prime is 20955667. The next prime is 20955707. The reversal of 20955677 is 77655902.

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 20955677 - 2⁸ = 20955421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20955647) 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, 45227 + ... + 45687.

It is an arithmetic number, because the mean of its divisors is an integer number (2652804).

Almost surely, 2^20955677 is an apocalyptic number.

It is an amenable number.

20955677 is a deficient number, since it is larger than the sum of its proper divisors (266755).

20955677 is a wasteful number, since it uses less digits than its factorization.

20955677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 20955677 is about 4577.7371047276. The cubic root of 20955677 is about 275.6981796559.

The spelling of 20955677 in words is "twenty million, nine hundred fifty-five thousand, six hundred seventy-seven".