667723467 has 16 divisors (see below), whose sum is σ = 946801440. Its totient is φ = 417126912.

The previous prime is 667723421. The next prime is 667723471. The reversal of 667723467 is 764327766.

It is not a de Polignac number, because 667723467 - 2⁸ = 667723211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667723487) 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, 16908 + ... + 40265.

It is an arithmetic number, because the mean of its divisors is an integer number (59175090).

Almost surely, 2^667723467 is an apocalyptic number.

667723467 is a deficient number, since it is larger than the sum of its proper divisors (279077973).

667723467 is a wasteful number, since it uses less digits than its factorization.

667723467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57422.

The product of its digits is 1778112, while the sum is 48.

The square root of 667723467 is about 25840.3457213715. The cubic root of 667723467 is about 874.0418211045.

The spelling of 667723467 in words is "six hundred sixty-seven million, seven hundred twenty-three thousand, four hundred sixty-seven".