667484554504207 has 4 divisors (see below), whose sum is σ = 728164968550056. Its totient is φ = 606804140458360.

The previous prime is 667484554504181. The next prime is 667484554504213. The reversal of 667484554504207 is 702405455484766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667484554504207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667484551504207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30340207022908 + ... + 30340207022929.

It is an arithmetic number, because the mean of its divisors is an integer number (182041242137514).

Almost surely, 2^{667484554504207} is an apocalyptic number.

667484554504207 is a deficient number, since it is larger than the sum of its proper divisors (60680414045849).

667484554504207 is a wasteful number, since it uses less digits than its factorization.

667484554504207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60680414045848.

The product of its (nonzero) digits is 903168000, while the sum is 67.

The spelling of 667484554504207 in words is "six hundred sixty-seven trillion, four hundred eighty-four billion, five hundred fifty-four million, five hundred four thousand, two hundred seven".