20960747 has 2 divisors, whose sum is σ = 20960748. Its totient is φ = 20960746.

The previous prime is 20960729. The next prime is 20960767. The reversal of 20960747 is 74706902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20960747 - 2¹⁶ = 20895211 is a prime.

It is not a weakly prime, because it can be changed into another prime (20960767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10480373 + 10480374.

It is an arithmetic number, because the mean of its divisors is an integer number (10480374).

Almost surely, 2^20960747 is an apocalyptic number.

20960747 is a deficient number, since it is larger than the sum of its proper divisors (1).

20960747 is an equidigital number, since it uses as much as digits as its factorization.

20960747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20960747 is about 4578.2908382933. The cubic root of 20960747 is about 275.7204119299.

The spelling of 20960747 in words is "twenty million, nine hundred sixty thousand, seven hundred forty-seven".