20709674 has 16 divisors (see below), whose sum is σ = 32852736. Its totient is φ = 9775200.

The previous prime is 20709671. The next prime is 20709691. The reversal of 20709674 is 47690702.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20709671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532 + ... + 6615.

It is an arithmetic number, because the mean of its divisors is an integer number (2053296).

Almost surely, 2^20709674 is an apocalyptic number.

20709674 is a deficient number, since it is larger than the sum of its proper divisors (12143062).

20709674 is a wasteful number, since it uses less digits than its factorization.

20709674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20709674 is about 4550.7882833637. The cubic root of 20709674 is about 274.6151045191.

The spelling of 20709674 in words is "twenty million, seven hundred nine thousand, six hundred seventy-four".