64284063857 has 8 divisors (see below), whose sum is σ = 73301285736. Its totient is φ = 55848598272.

The previous prime is 64284063841. The next prime is 64284063863. The reversal of 64284063857 is 75836048246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1218289216 + 63065774641 = 34904^2 + 251129^2 .

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 64284063857 - 2⁴ = 64284063841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64284063799 and 64284063808.

It is not an unprimeable number, because it can be changed into a prime (64284063817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145438838 + ... + 145439279.

It is an arithmetic number, because the mean of its divisors is an integer number (9162660717).

Almost surely, 2^64284063857 is an apocalyptic number.

It is an amenable number.

64284063857 is a deficient number, since it is larger than the sum of its proper divisors (9017221879).

64284063857 is a wasteful number, since it uses less digits than its factorization.

64284063857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290878147.

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 64284063857 in words is "sixty-four billion, two hundred eighty-four million, sixty-three thousand, eight hundred fifty-seven".