620644680041 has 2 divisors, whose sum is σ = 620644680042. Its totient is φ = 620644680040.

The previous prime is 620644680031. The next prime is 620644680109. The reversal of 620644680041 is 140086446026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620044430041 + 600250000 = 787429^2 + 24500^2 .

It is a cyclic number.

It is not a de Polignac number, because 620644680041 - 2¹⁴ = 620644663657 is a prime.

It is not a weakly prime, because it can be changed into another prime (620644680031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310322340020 + 310322340021.

It is an arithmetic number, because the mean of its divisors is an integer number (310322340021).

Almost surely, 2^620644680041 is an apocalyptic number.

It is an amenable number.

620644680041 is a deficient number, since it is larger than the sum of its proper divisors (1).

620644680041 is an equidigital number, since it uses as much as digits as its factorization.

620644680041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 620644680041 in words is "six hundred twenty billion, six hundred forty-four million, six hundred eighty thousand, forty-one".