6436465397 has 2 divisors, whose sum is σ = 6436465398. Its totient is φ = 6436465396.

The previous prime is 6436465381. The next prime is 6436465417. The reversal of 6436465397 is 7935646346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5811165361 + 625300036 = 76231^2 + 25006^2 .

It is a cyclic number.

It is not a de Polignac number, because 6436465397 - 2⁴ = 6436465381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6436465307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218232698 + 3218232699.

It is an arithmetic number, because the mean of its divisors is an integer number (3218232699).

Almost surely, 2^6436465397 is an apocalyptic number.

It is an amenable number.

6436465397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6436465397 is an equidigital number, since it uses as much as digits as its factorization.

6436465397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 53.

The square root of 6436465397 is about 80227.5850128869. The cubic root of 6436465397 is about 1860.1550528814.

The spelling of 6436465397 in words is "six billion, four hundred thirty-six million, four hundred sixty-five thousand, three hundred ninety-seven".