20964701 has 2 divisors, whose sum is σ = 20964702. Its totient is φ = 20964700.

The previous prime is 20964677. The next prime is 20964703. The reversal of 20964701 is 10746902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 1692601 = 4390^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 20964701 - 2⁶ = 20964637 is a prime.

It is a Sophie Germain prime.

Together with 20964703, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20964703) 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 as a sum of consecutive naturals, namely, 10482350 + 10482351.

It is an arithmetic number, because the mean of its divisors is an integer number (10482351).

Almost surely, 2^20964701 is an apocalyptic number.

It is an amenable number.

20964701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20964701 is an equidigital number, since it uses as much as digits as its factorization.

20964701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20964701 is about 4578.7226384659. The cubic root of 20964701 is about 275.7377479845.

The spelling of 20964701 in words is "twenty million, nine hundred sixty-four thousand, seven hundred one".