620687707 has 2 divisors, whose sum is σ = 620687708. Its totient is φ = 620687706.

The previous prime is 620687701. The next prime is 620687713. The reversal of 620687707 is 707786026.

It is a balanced prime because it is at equal distance from previous prime (620687701) and next prime (620687713).

It is a cyclic number.

It is not a de Polignac number, because 620687707 - 2¹⁹ = 620163419 is a prime.

It is not a weakly prime, because it can be changed into another prime (620687701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310343853 + 310343854.

It is an arithmetic number, because the mean of its divisors is an integer number (310343854).

Almost surely, 2^620687707 is an apocalyptic number.

620687707 is a deficient number, since it is larger than the sum of its proper divisors (1).

620687707 is an equidigital number, since it uses as much as digits as its factorization.

620687707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 620687707 is about 24913.6048575873. The cubic root of 620687707 is about 853.0170555228.

The spelling of 620687707 in words is "six hundred twenty million, six hundred eighty-seven thousand, seven hundred seven".