667065463889 has 8 divisors (see below), whose sum is σ = 744631216032. Its totient is φ = 592320284640.

The previous prime is 667065463843. The next prime is 667065463919. The reversal of 667065463889 is 988364560766.

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 667065463889 - 2⁸ = 667065463633 is a prime.

It is a super-2 number, since 2×667065463889² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667065463489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705142724 + ... + 705143669.

It is an arithmetic number, because the mean of its divisors is an integer number (93078902004).

Almost surely, 2^667065463889 is an apocalyptic number.

It is an amenable number.

667065463889 is a deficient number, since it is larger than the sum of its proper divisors (77565752143).

667065463889 is a wasteful number, since it uses less digits than its factorization.

667065463889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410286447.

The product of its (nonzero) digits is 313528320, while the sum is 68.

The spelling of 667065463889 in words is "six hundred sixty-seven billion, sixty-five million, four hundred sixty-three thousand, eight hundred eighty-nine".