20960863 has 16 divisors (see below), whose sum is σ = 26337024. Its totient is φ = 16205760.

The previous prime is 20960851. The next prime is 20960879. The reversal of 20960863 is 36806902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20960863 - 2⁵ = 20960831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20960803) 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, 9556 + ... + 11542.

It is an arithmetic number, because the mean of its divisors is an integer number (1646064).

Almost surely, 2^20960863 is an apocalyptic number.

20960863 is a deficient number, since it is larger than the sum of its proper divisors (5376161).

20960863 is a wasteful number, since it uses less digits than its factorization.

20960863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20960863 is about 4578.3035067588. The cubic root of 20960863 is about 275.7209205554.

The spelling of 20960863 in words is "twenty million, nine hundred sixty thousand, eight hundred sixty-three".