6400060667 has 32 divisors (see below), whose sum is σ = 8768524800. Its totient is φ = 4603404960.

The previous prime is 6400060649. The next prime is 6400060673. The reversal of 6400060667 is 7660600046.

It is not a de Polignac number, because 6400060667 - 2⁸ = 6400060411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6400060067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16193 + ... + 114290.

It is an arithmetic number, because the mean of its divisors is an integer number (274016400).

Almost surely, 2^6400060667 is an apocalyptic number.

6400060667 is a deficient number, since it is larger than the sum of its proper divisors (2368464133).

6400060667 is a wasteful number, since it uses less digits than its factorization.

6400060667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130528 (or 130514 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 6400060667 is about 80000.3791678514. The cubic root of 6400060667 is about 1856.6413999114.

The spelling of 6400060667 in words is "six billion, four hundred million, sixty thousand, six hundred sixty-seven".