620367977 has 2 divisors, whose sum is σ = 620367978. Its totient is φ = 620367976.

The previous prime is 620367911. The next prime is 620367989. The reversal of 620367977 is 779763026.

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., 614097961 + 6270016 = 24781^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 620367977 - 2⁸ = 620367721 is a prime.

It is not a weakly prime, because it can be changed into another prime (620367277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310183988 + 310183989.

It is an arithmetic number, because the mean of its divisors is an integer number (310183989).

Almost surely, 2^620367977 is an apocalyptic number.

It is an amenable number.

620367977 is a deficient number, since it is larger than the sum of its proper divisors (1).

620367977 is an equidigital number, since it uses as much as digits as its factorization.

620367977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 47.

The square root of 620367977 is about 24907.1872558906. The cubic root of 620367977 is about 852.8705610328.

The spelling of 620367977 in words is "six hundred twenty million, three hundred sixty-seven thousand, nine hundred seventy-seven".