20774673 has 6 divisors (see below), whose sum is σ = 30007874. Its totient is φ = 13849776.

The previous prime is 20774653. The next prime is 20774683. The reversal of 20774673 is 37647702.

It can be written as a sum of positive squares in only one way, i.e., 18378369 + 2396304 = 4287^2 + 1548^2 .

It is not a de Polignac number, because 20774673 - 2⁶ = 20774609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20774603) 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, 1154140 + ... + 1154157.

Almost surely, 2^20774673 is an apocalyptic number.

It is an amenable number.

20774673 is a deficient number, since it is larger than the sum of its proper divisors (9233201).

20774673 is a wasteful number, since it uses less digits than its factorization.

20774673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308303 (or 2308300 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 20774673 is about 4557.9241985799. The cubic root of 20774673 is about 274.9021051003.

The spelling of 20774673 in words is "twenty million, seven hundred seventy-four thousand, six hundred seventy-three".