6420807097 has 2 divisors, whose sum is σ = 6420807098. Its totient is φ = 6420807096.

The previous prime is 6420807037. The next prime is 6420807103. The reversal of 6420807097 is 7907080246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5208653241 + 1212153856 = 72171^2 + 34816^2 .

It is a cyclic number.

It is not a de Polignac number, because 6420807097 - 2⁷ = 6420806969 is a prime.

It is not a weakly prime, because it can be changed into another prime (6420807037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210403548 + 3210403549.

It is an arithmetic number, because the mean of its divisors is an integer number (3210403549).

Almost surely, 2^6420807097 is an apocalyptic number.

It is an amenable number.

6420807097 is a deficient number, since it is larger than the sum of its proper divisors (1).

6420807097 is an equidigital number, since it uses as much as digits as its factorization.

6420807097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 6420807097 is about 80129.9388306268. The cubic root of 6420807097 is about 1858.6453983591.

The spelling of 6420807097 in words is "six billion, four hundred twenty million, eight hundred seven thousand, ninety-seven".