20960077 has 2 divisors, whose sum is σ = 20960078. Its totient is φ = 20960076.

The previous prime is 20960057. The next prime is 20960083. The reversal of 20960077 is 77006902.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18224361 + 2735716 = 4269^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 20960077 - 2¹¹ = 20958029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20960047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10480038 + 10480039.

It is an arithmetic number, because the mean of its divisors is an integer number (10480039).

Almost surely, 2^20960077 is an apocalyptic number.

It is an amenable number.

20960077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20960077 is an equidigital number, since it uses as much as digits as its factorization.

20960077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 20960077 is about 4578.2176662977. The cubic root of 20960077 is about 275.7174741427.

Adding to 20960077 its reverse (77006902), we get a palindrome (97966979).

The spelling of 20960077 in words is "twenty million, nine hundred sixty thousand, seventy-seven".