20674005 has 32 divisors (see below), whose sum is σ = 36453888. Its totient is φ = 9921600.

The previous prime is 20673997. The next prime is 20674007. The reversal of 20674005 is 50047602.

It is a happy number.

It is not a de Polignac number, because 20674005 - 2³ = 20673997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20674007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17070 + ... + 18240.

It is an arithmetic number, because the mean of its divisors is an integer number (1139184).

Almost surely, 2^20674005 is an apocalyptic number.

It is an amenable number.

20674005 is a deficient number, since it is larger than the sum of its proper divisors (15779883).

20674005 is a wasteful number, since it uses less digits than its factorization.

20674005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20674005 is about 4546.8676030868. The cubic root of 20674005 is about 274.4573541667.

The spelling of 20674005 in words is "twenty million, six hundred seventy-four thousand, five".