667185230087 has 4 divisors (see below), whose sum is σ = 667727217696. Its totient is φ = 666643242480.

The previous prime is 667185230077. The next prime is 667185230099. The reversal of 667185230087 is 780032581766.

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

It is a cyclic number.

It is not a de Polignac number, because 667185230087 - 2⁸ = 667185229831 is a prime.

It is a super-2 number, since 2×667185230087² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667185230077) 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, 270991958 + ... + 270994419.

It is an arithmetic number, because the mean of its divisors is an integer number (166931804424).

Almost surely, 2^667185230087 is an apocalyptic number.

667185230087 is a deficient number, since it is larger than the sum of its proper divisors (541987609).

667185230087 is a wasteful number, since it uses less digits than its factorization.

667185230087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541987608.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 667185230087 in words is "six hundred sixty-seven billion, one hundred eighty-five million, two hundred thirty thousand, eighty-seven".