6466838536 has 8 divisors (see below), whose sum is σ = 12125322270. Its totient is φ = 3233419264.

The previous prime is 6466838531. The next prime is 6466838551. The reversal of 6466838536 is 6358386646.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3793328100 + 2673510436 = 61590^2 + 51706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6466838531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404177401 + ... + 404177416.

Almost surely, 2^6466838536 is an apocalyptic number.

It is an amenable number.

6466838536 is a deficient number, since it is larger than the sum of its proper divisors (5658483734).

6466838536 is a wasteful number, since it uses less digits than its factorization.

6466838536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808354823 (or 808354819 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 55.

The square root of 6466838536 is about 80416.6558369595. The cubic root of 6466838536 is about 1863.0764341992.

The spelling of 6466838536 in words is "six billion, four hundred sixty-six million, eight hundred thirty-eight thousand, five hundred thirty-six".