20339697 has 8 divisors (see below), whose sum is σ = 30993856. Its totient is φ = 11622672.

The previous prime is 20339681. The next prime is 20339717. The reversal of 20339697 is 79693302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20339697 - 2⁴ = 20339681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20339197) 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, 484258 + ... + 484299.

It is an arithmetic number, because the mean of its divisors is an integer number (3874232).

Almost surely, 2^20339697 is an apocalyptic number.

It is an amenable number.

20339697 is a deficient number, since it is larger than the sum of its proper divisors (10654159).

20339697 is an equidigital number, since it uses as much as digits as its factorization.

20339697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968567.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 20339697 is about 4509.9553212865. The cubic root of 20339697 is about 272.9699412758.

The spelling of 20339697 in words is "twenty million, three hundred thirty-nine thousand, six hundred ninety-seven".