667350043 has 4 divisors (see below), whose sum is σ = 667487520. Its totient is φ = 667212568.

The previous prime is 667350007. The next prime is 667350049. The reversal of 667350043 is 340053766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667350043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667349990 and 667350008.

It is not an unprimeable number, because it can be changed into a prime (667350049) 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 3 ways as a sum of consecutive naturals, for example, 61180 + ... + 71257.

It is an arithmetic number, because the mean of its divisors is an integer number (166871880).

Almost surely, 2^667350043 is an apocalyptic number.

667350043 is a deficient number, since it is larger than the sum of its proper divisors (137477).

667350043 is a wasteful number, since it uses less digits than its factorization.

667350043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137476.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 667350043 is about 25833.1191109397. The cubic root of 667350043 is about 873.8788549106.

The spelling of 667350043 in words is "six hundred sixty-seven million, three hundred fifty thousand, forty-three".