667020343 has 16 divisors (see below), whose sum is σ = 746038656. Its totient is φ = 591121440.

The previous prime is 667020331. The next prime is 667020353. The reversal of 667020343 is 343020766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667020343 is a prime.

It is a super-2 number, since 2×667020343² = 889832275951675298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667020353) 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 15 ways as a sum of consecutive naturals, for example, 319180 + ... + 321262.

It is an arithmetic number, because the mean of its divisors is an integer number (46627416).

Almost surely, 2^667020343 is an apocalyptic number.

667020343 is a deficient number, since it is larger than the sum of its proper divisors (79018313).

667020343 is a wasteful number, since it uses less digits than its factorization.

667020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 667020343 is about 25826.7369793398. The cubic root of 667020343 is about 873.7349197938.

The spelling of 667020343 in words is "six hundred sixty-seven million, twenty thousand, three hundred forty-three".