6455399065 has 8 divisors (see below), whose sum is σ = 7955843400. Its totient is φ = 5024742912.

The previous prime is 6455399063. The next prime is 6455399087. The reversal of 6455399065 is 5609935546.

It can be written as a sum of positive squares in 4 ways, for example, as 2550149001 + 3905250064 = 50499^2 + 62492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6455399065 - 2¹ = 6455399063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6455399063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17446840 + ... + 17447209.

It is an arithmetic number, because the mean of its divisors is an integer number (994480425).

Almost surely, 2^6455399065 is an apocalyptic number.

It is an amenable number.

6455399065 is a deficient number, since it is larger than the sum of its proper divisors (1500444335).

6455399065 is a wasteful number, since it uses less digits than its factorization.

6455399065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34894091.

The product of its (nonzero) digits is 4374000, while the sum is 52.

The square root of 6455399065 is about 80345.4981003914. The cubic root of 6455399065 is about 1861.9772269117.

The spelling of 6455399065 in words is "six billion, four hundred fifty-five million, three hundred ninety-nine thousand, sixty-five".