667346673 has 16 divisors (see below), whose sum is σ = 1018054656. Its totient is φ = 380911440.

The previous prime is 667346651. The next prime is 667346737. The reversal of 667346673 is 376643766.

It is not a de Polignac number, because 667346673 - 2¹⁴ = 667330289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667346573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690 + ... + 36572.

It is an arithmetic number, because the mean of its divisors is an integer number (63628416).

Almost surely, 2^667346673 is an apocalyptic number.

It is an amenable number.

667346673 is a deficient number, since it is larger than the sum of its proper divisors (350707983).

667346673 is a wasteful number, since it uses less digits than its factorization.

667346673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35804.

The product of its digits is 2286144, while the sum is 48.

The square root of 667346673 is about 25833.0538845101. The cubic root of 667346673 is about 873.8773839301.

The spelling of 667346673 in words is "six hundred sixty-seven million, three hundred forty-six thousand, six hundred seventy-three".