620104637 has 2 divisors, whose sum is σ = 620104638. Its totient is φ = 620104636.

The previous prime is 620104543. The next prime is 620104657. The reversal of 620104637 is 736401026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449906521 + 170198116 = 21211^2 + 13046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620104637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620104657) 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, 310052318 + 310052319.

It is an arithmetic number, because the mean of its divisors is an integer number (310052319).

Almost surely, 2^620104637 is an apocalyptic number.

It is an amenable number.

620104637 is a deficient number, since it is larger than the sum of its proper divisors (1).

620104637 is an equidigital number, since it uses as much as digits as its factorization.

620104637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 620104637 is about 24901.9002688550. The cubic root of 620104637 is about 852.7498656129.

The spelling of 620104637 in words is "six hundred twenty million, one hundred four thousand, six hundred thirty-seven".