20608707 has 16 divisors (see below), whose sum is σ = 32417792. Its totient is φ = 11396160.

The previous prime is 20608681. The next prime is 20608723. The reversal of 20608707 is 70780602.

It is not a de Polignac number, because 20608707 - 2¹⁹ = 20084419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20608727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15178 + ... + 16479.

It is an arithmetic number, because the mean of its divisors is an integer number (2026112).

Almost surely, 2^20608707 is an apocalyptic number.

20608707 is a deficient number, since it is larger than the sum of its proper divisors (11809085).

20608707 is a wasteful number, since it uses less digits than its factorization.

20608707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31698.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 20608707 is about 4539.6813764845. The cubic root of 20608707 is about 274.1680953025.

The spelling of 20608707 in words is "twenty million, six hundred eight thousand, seven hundred seven".