667064523 has 8 divisors (see below), whose sum is σ = 899413200. Its totient is φ = 439712768.

The previous prime is 667064509. The next prime is 667064537. The reversal of 667064523 is 325460766.

667064523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (667064509) and next prime (667064537).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667064523 - 2⁵ = 667064491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667064323) 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, 1248918 + ... + 1249451.

It is an arithmetic number, because the mean of its divisors is an integer number (112426650).

Almost surely, 2^667064523 is an apocalyptic number.

667064523 is a deficient number, since it is larger than the sum of its proper divisors (232348677).

667064523 is a wasteful number, since it uses less digits than its factorization.

667064523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498461.

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 667064523 is about 25827.5922803501. The cubic root of 667064523 is about 873.7542099384.

The spelling of 667064523 in words is "six hundred sixty-seven million, sixty-four thousand, five hundred twenty-three".