620702087 has 2 divisors, whose sum is σ = 620702088. Its totient is φ = 620702086.

The previous prime is 620702039. The next prime is 620702101. The reversal of 620702087 is 780207026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620702087 - 2⁸ = 620701831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620705087) 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, 310351043 + 310351044.

It is an arithmetic number, because the mean of its divisors is an integer number (310351044).

Almost surely, 2^620702087 is an apocalyptic number.

620702087 is a deficient number, since it is larger than the sum of its proper divisors (1).

620702087 is an equidigital number, since it uses as much as digits as its factorization.

620702087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 620702087 is about 24913.8934532521. The cubic root of 620702087 is about 853.0236429958.

The spelling of 620702087 in words is "six hundred twenty million, seven hundred two thousand, eighty-seven".