20674617 has 4 divisors (see below), whose sum is σ = 27566160. Its totient is φ = 13783076.

The previous prime is 20674609. The next prime is 20674627. The reversal of 20674617 is 71647602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20674617 - 2³ = 20674609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20674627) 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, 3445767 + ... + 3445772.

It is an arithmetic number, because the mean of its divisors is an integer number (6891540).

Almost surely, 2^20674617 is an apocalyptic number.

It is an amenable number.

20674617 is a deficient number, since it is larger than the sum of its proper divisors (6891543).

20674617 is an equidigital number, since it uses as much as digits as its factorization.

20674617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891542.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20674617 is about 4546.9349016673. The cubic root of 20674617 is about 274.4600623381.

The spelling of 20674617 in words is "twenty million, six hundred seventy-four thousand, six hundred seventeen".