667304047 has 4 divisors (see below), whose sum is σ = 688830016. Its totient is φ = 645778080.

The previous prime is 667304017. The next prime is 667304063. The reversal of 667304047 is 740403766.

667304047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740403766 = 2 ⋅370201883.

It is a cyclic number.

It is not a de Polignac number, because 667304047 - 2⁷ = 667303919 is a prime.

It is a super-2 number, since 2×667304047² = 890589382285156418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667303997 and 667304015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667304017) 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, 10762938 + ... + 10762999.

It is an arithmetic number, because the mean of its divisors is an integer number (172207504).

Almost surely, 2^667304047 is an apocalyptic number.

667304047 is a deficient number, since it is larger than the sum of its proper divisors (21525969).

667304047 is a wasteful number, since it uses less digits than its factorization.

667304047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21525968.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 667304047 is about 25832.2288430557. The cubic root of 667304047 is about 873.8587775635.

The spelling of 667304047 in words is "six hundred sixty-seven million, three hundred four thousand, forty-seven".