20965307 has 6 divisors (see below), whose sum is σ = 23044644. Its totient is φ = 19059260.

The previous prime is 20965283. The next prime is 20965327. The reversal of 20965307 is 70356902.

It is not a de Polignac number, because 20965307 - 2¹⁰ = 20964283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20965327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86513 + ... + 86754.

It is an arithmetic number, because the mean of its divisors is an integer number (3840774).

Almost surely, 2^20965307 is an apocalyptic number.

20965307 is a deficient number, since it is larger than the sum of its proper divisors (2079337).

20965307 is a wasteful number, since it uses less digits than its factorization.

20965307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173289 (or 173278 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 20965307 is about 4578.7888136493. The cubic root of 20965307 is about 275.7404047593.

The spelling of 20965307 in words is "twenty million, nine hundred sixty-five thousand, three hundred seven".