20677033 has 4 divisors (see below), whose sum is σ = 22267588. Its totient is φ = 19086480.

The previous prime is 20677003. The next prime is 20677037. The reversal of 20677033 is 33077602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33077602 = 2 ⋅16538801.

It can be written as a sum of positive squares in 2 ways, for example, as 11209104 + 9467929 = 3348^2 + 3077^2 .

It is a cyclic number.

It is not a de Polignac number, because 20677033 - 2⁹ = 20676521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20676992 and 20677010.

It is not an unprimeable number, because it can be changed into a prime (20677037) 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, 795258 + ... + 795283.

It is an arithmetic number, because the mean of its divisors is an integer number (5566897).

Almost surely, 2^20677033 is an apocalyptic number.

It is an amenable number.

20677033 is a deficient number, since it is larger than the sum of its proper divisors (1590555).

20677033 is a wasteful number, since it uses less digits than its factorization.

20677033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590554.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 20677033 is about 4547.2005673821. The cubic root of 20677033 is about 274.4707528978.

The spelling of 20677033 in words is "twenty million, six hundred seventy-seven thousand, thirty-three".