667346346 has 12 divisors (see below), whose sum is σ = 1445917122. Its totient is φ = 222448776.

The previous prime is 667346341. The next prime is 667346353. The reversal of 667346346 is 643643766.

667346346 is a `hidden beast` number, since 6 + 6 + 7 + 3 + 4 + 634 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 625550121 + 41796225 = 25011^2 + 6465^2 .

It is a super-2 number, since 2×667346346² = 890702291039103432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667346341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18537381 + ... + 18537416.

Almost surely, 2^667346346 is an apocalyptic number.

667346346 is an abundant number, since it is smaller than the sum of its proper divisors (778570776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667346346 is a wasteful number, since it uses less digits than its factorization.

667346346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37074805 (or 37074802 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 45.

The square root of 667346346 is about 25833.0475554086. The cubic root of 667346346 is about 873.8772411967.

The spelling of 667346346 in words is "six hundred sixty-seven million, three hundred forty-six thousand, three hundred forty-six".