20676655 has 16 divisors (see below), whose sum is σ = 27256320. Its totient is φ = 14987808.

The previous prime is 20676637. The next prime is 20676661. The reversal of 20676655 is 55667602.

It is not a de Polignac number, because 20676655 - 2⁷ = 20676527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2547 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^20676655 is an apocalyptic number.

20676655 is a deficient number, since it is larger than the sum of its proper divisors (6579665).

20676655 is a wasteful number, since it uses less digits than its factorization.

20676655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9510.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 20676655 is about 4547.1590031579. The cubic root of 20676655 is about 274.4690803403.

The spelling of 20676655 in words is "twenty million, six hundred seventy-six thousand, six hundred fifty-five".