667216232674 has 8 divisors (see below), whose sum is σ = 1001039640300. Its totient is φ = 333536352576.

The previous prime is 667216232651. The next prime is 667216232677. The reversal of 667216232674 is 476232612766.

It is a happy number.

667216232674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 617234923449 + 49981309225 = 785643^2 + 223565^2 .

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

It is a super-2 number, since 2×667216232674² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667216232677) 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, 35870259 + ... + 35888854.

Almost surely, 2^667216232674 is an apocalyptic number.

667216232674 is a deficient number, since it is larger than the sum of its proper divisors (333823407626).

667216232674 is a wasteful number, since it uses less digits than its factorization.

667216232674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71763764.

The product of its digits is 6096384, while the sum is 52.

The spelling of 667216232674 in words is "six hundred sixty-seven billion, two hundred sixteen million, two hundred thirty-two thousand, six hundred seventy-four".