6464058857 has 2 divisors, whose sum is σ = 6464058858. Its totient is φ = 6464058856.

The previous prime is 6464058833. The next prime is 6464058863. The reversal of 6464058857 is 7588504646.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6139662736 + 324396121 = 78356^2 + 18011^2 .

It is a cyclic number.

It is not a de Polignac number, because 6464058857 - 2¹⁰ = 6464057833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6464058799 and 6464058808.

It is not a weakly prime, because it can be changed into another prime (6464058817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232029428 + 3232029429.

It is an arithmetic number, because the mean of its divisors is an integer number (3232029429).

Almost surely, 2^6464058857 is an apocalyptic number.

It is an amenable number.

6464058857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6464058857 is an equidigital number, since it uses as much as digits as its factorization.

6464058857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The square root of 6464058857 is about 80399.3709987833. The cubic root of 6464058857 is about 1862.8094569329.

The spelling of 6464058857 in words is "six billion, four hundred sixty-four million, fifty-eight thousand, eight hundred fifty-seven".