20965063 has 16 divisors (see below), whose sum is σ = 25994304. Its totient is φ = 16496640.

The previous prime is 20965027. The next prime is 20965067. The reversal of 20965063 is 36056902.

It is a cyclic number.

It is not a de Polignac number, because 20965063 - 2¹⁷ = 20833991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20965067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2731 + ... + 7027.

It is an arithmetic number, because the mean of its divisors is an integer number (1624644).

Almost surely, 2^20965063 is an apocalyptic number.

20965063 is a deficient number, since it is larger than the sum of its proper divisors (5029241).

20965063 is a wasteful number, since it uses less digits than its factorization.

20965063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 20965063 is about 4578.7621689710. The cubic root of 20965063 is about 275.7393350410.

The spelling of 20965063 in words is "twenty million, nine hundred sixty-five thousand, sixty-three".