620546011691 has 2 divisors, whose sum is σ = 620546011692. Its totient is φ = 620546011690.

The previous prime is 620546011661. The next prime is 620546011777. The reversal of 620546011691 is 196110645026.

620546011691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620546011691 - 2³⁴ = 603366142507 is a prime.

It is not a weakly prime, because it can be changed into another prime (620546011601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310273005845 + 310273005846.

It is an arithmetic number, because the mean of its divisors is an integer number (310273005846).

Almost surely, 2^620546011691 is an apocalyptic number.

620546011691 is a deficient number, since it is larger than the sum of its proper divisors (1).

620546011691 is an equidigital number, since it uses as much as digits as its factorization.

620546011691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 620546011691 in words is "six hundred twenty billion, five hundred forty-six million, eleven thousand, six hundred ninety-one".