20708066 has 8 divisors (see below), whose sum is σ = 31081644. Its totient is φ = 10347520.

The previous prime is 20708021. The next prime is 20708099. The reversal of 20708066 is 66080702.

It can be written as a sum of positive squares in 2 ways, for example, as 19616041 + 1092025 = 4429^2 + 1045^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3626 + ... + 7386.

Almost surely, 2^20708066 is an apocalyptic number.

20708066 is a deficient number, since it is larger than the sum of its proper divisors (10373578).

20708066 is a wasteful number, since it uses less digits than its factorization.

20708066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20708066 is about 4550.6116072458. The cubic root of 20708066 is about 274.6079968503.

Adding to 20708066 its reverse (66080702), we get a palindrome (86788768).

The spelling of 20708066 in words is "twenty million, seven hundred eight thousand, sixty-six".