667367104727357 has 4 divisors (see below), whose sum is σ = 667369894531356. Its totient is φ = 667364314923360.

The previous prime is 667367104727339. The next prime is 667367104727359. The reversal of 667367104727357 is 753727401763766.

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

It can be written as a sum of positive squares in 2 ways, for example, as 389826365248441 + 277540739478916 = 19744021^2 + 16659554^2 .

It is a cyclic number.

It is not a de Polignac number, because 667367104727357 - 2⁶ = 667367104727293 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 (667367104727359) 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, 1394543144 + ... + 1395021617.

It is an arithmetic number, because the mean of its divisors is an integer number (166842473632839).

Almost surely, 2^{667367104727357} is an apocalyptic number.

It is an amenable number.

667367104727357 is a deficient number, since it is larger than the sum of its proper divisors (2789803999).

667367104727357 is a wasteful number, since it uses less digits than its factorization.

667367104727357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789803998.

The product of its (nonzero) digits is 1306912320, while the sum is 71.

The spelling of 667367104727357 in words is "six hundred sixty-seven trillion, three hundred sixty-seven billion, one hundred four million, seven hundred twenty-seven thousand, three hundred fifty-seven".