20677068 has 18 divisors (see below), whose sum is σ = 52267124. Its totient is φ = 6892344.

The previous prime is 20677067. The next prime is 20677091. The reversal of 20677068 is 86077602.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×20677068² = 855082282153248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 574363 = 20677068 / (2 + 0 + 6 + 7 + 7 + 0 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (20677061) 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, 287146 + ... + 287217.

Almost surely, 2^20677068 is an apocalyptic number.

It is an amenable number.

20677068 is an abundant number, since it is smaller than the sum of its proper divisors (31590056).

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

20677068 is a wasteful number, since it uses less digits than its factorization.

20677068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574373 (or 574368 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 20677068 is about 4547.2044159021. The cubic root of 20677068 is about 274.4709077632.

The spelling of 20677068 in words is "twenty million, six hundred seventy-seven thousand, sixty-eight".