667707467 has 8 divisors (see below), whose sum is σ = 778668000. Its totient is φ = 572320392.

The previous prime is 667707431. The next prime is 667707473. The reversal of 667707467 is 764707766.

It is a happy number.

667707467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-667707467 is a prime.

It is a super-2 number, since 2×667707467² = 891666522975112178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667707067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972992 + ... + 973677.

It is an arithmetic number, because the mean of its divisors is an integer number (97333500).

Almost surely, 2^667707467 is an apocalyptic number.

667707467 is a deficient number, since it is larger than the sum of its proper divisors (110960533).

667707467 is an equidigital number, since it uses as much as digits as its factorization.

667707467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946690 (or 1946676 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 50.

The square root of 667707467 is about 25840.0361261357. The cubic root of 667707467 is about 874.0348397809.

The spelling of 667707467 in words is "six hundred sixty-seven million, seven hundred seven thousand, four hundred sixty-seven".