20676618 has 12 divisors (see below), whose sum is σ = 44799378. Its totient is φ = 6892200.

The previous prime is 20676613. The next prime is 20676629. The reversal of 20676618 is 81667602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14311089 + 6365529 = 3783^2 + 2523^2 .

It is not an unprimeable number, because it can be changed into a prime (20676611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574333 + ... + 574368.

Almost surely, 2^20676618 is an apocalyptic number.

20676618 is an abundant number, since it is smaller than the sum of its proper divisors (24122760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20676618 is a wasteful number, since it uses less digits than its factorization.

20676618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148709 (or 1148706 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 20676618 is about 4547.1549346817. The cubic root of 20676618 is about 274.4689166233.

The spelling of 20676618 in words is "twenty million, six hundred seventy-six thousand, six hundred eighteen".