667440367670 has 16 divisors (see below), whose sum is σ = 1201454657280. Its totient is φ = 266962370304.

The previous prime is 667440367663. The next prime is 667440367747. The reversal of 667440367670 is 76763044766.

667440367670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517462 + ... + 1907241.

It is an arithmetic number, because the mean of its divisors is an integer number (75090916080).

Almost surely, 2^667440367670 is an apocalyptic number.

667440367670 is a deficient number, since it is larger than the sum of its proper divisors (534014289610).

667440367670 is a wasteful number, since it uses less digits than its factorization.

667440367670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444199.

The product of its (nonzero) digits is 21337344, while the sum is 56.

The spelling of 667440367670 in words is "six hundred sixty-seven billion, four hundred forty million, three hundred sixty-seven thousand, six hundred seventy".