20331706 has 4 divisors (see below), whose sum is σ = 30497562. Its totient is φ = 10165852.

The previous prime is 20331679. The next prime is 20331721. The reversal of 20331706 is 60713302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20331081 + 625 = 4509^2 + 25^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5082925 + ... + 5082928.

Almost surely, 2^20331706 is an apocalyptic number.

20331706 is a deficient number, since it is larger than the sum of its proper divisors (10165856).

20331706 is a wasteful number, since it uses less digits than its factorization.

20331706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10165855.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 20331706 is about 4509.0693053002. The cubic root of 20331706 is about 272.9341887189.

The spelling of 20331706 in words is "twenty million, three hundred thirty-one thousand, seven hundred six".