6464688693 has 8 divisors (see below), whose sum is σ = 8641744800. Its totient is φ = 4298712528.

The previous prime is 6464688691. The next prime is 6464688707. The reversal of 6464688693 is 3968864646.

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

It is not a de Polignac number, because 6464688693 - 2¹ = 6464688691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464688691) 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, 2768623 + ... + 2770956.

It is an arithmetic number, because the mean of its divisors is an integer number (1080218100).

Almost surely, 2^6464688693 is an apocalyptic number.

It is an amenable number.

6464688693 is a deficient number, since it is larger than the sum of its proper divisors (2177056107).

6464688693 is a wasteful number, since it uses less digits than its factorization.

6464688693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539971.

The product of its digits is 35831808, while the sum is 60.

The square root of 6464688693 is about 80403.2878245660. The cubic root of 6464688693 is about 1862.8699569159.

The spelling of 6464688693 in words is "six billion, four hundred sixty-four million, six hundred eighty-eight thousand, six hundred ninety-three".