20965707 has 24 divisors (see below), whose sum is σ = 35133696. Its totient is φ = 11799216.

The previous prime is 20965669. The next prime is 20965723. The reversal of 20965707 is 70756902.

It is not a de Polignac number, because 20965707 - 2¹¹ = 20963659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20965727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1738 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (1463904).

Almost surely, 2^20965707 is an apocalyptic number.

20965707 is a deficient number, since it is larger than the sum of its proper divisors (14167989).

20965707 is a wasteful number, since it uses less digits than its factorization.

20965707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047 (or 5044 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 20965707 is about 4578.8324931144. The cubic root of 20965707 is about 275.7421583779.

The spelling of 20965707 in words is "twenty million, nine hundred sixty-five thousand, seven hundred seven".