667667663674 has 8 divisors (see below), whose sum is σ = 1092547086048. Its totient is φ = 303485301660.

The previous prime is 667667663671. The next prime is 667667663699. The reversal of 667667663674 is 476366766766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (667667663671) 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, 15174265062 + ... + 15174265105.

It is an arithmetic number, because the mean of its divisors is an integer number (136568385756).

Almost surely, 2^667667663674 is an apocalyptic number.

667667663674 is a deficient number, since it is larger than the sum of its proper divisors (424879422374).

667667663674 is a wasteful number, since it uses less digits than its factorization.

667667663674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30348530180.

The product of its digits is 1152216576, while the sum is 70.

The spelling of 667667663674 in words is "six hundred sixty-seven billion, six hundred sixty-seven million, six hundred sixty-three thousand, six hundred seventy-four".