667164887 has 8 divisors (see below), whose sum is σ = 702933504. Its totient is φ = 631959768.

The previous prime is 667164877. The next prime is 667164889. The reversal of 667164887 is 788461766.

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 667164887 - 2¹⁶ = 667099351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667164889) 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, 138443 + ... + 143180.

It is an arithmetic number, because the mean of its divisors is an integer number (87866688).

Almost surely, 2^667164887 is an apocalyptic number.

667164887 is a deficient number, since it is larger than the sum of its proper divisors (35768617).

667164887 is a wasteful number, since it uses less digits than its factorization.

667164887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281749.

The product of its digits is 2709504, while the sum is 53.

The square root of 667164887 is about 25829.5351680978. The cubic root of 667164887 is about 873.7980283232.

The spelling of 667164887 in words is "six hundred sixty-seven million, one hundred sixty-four thousand, eight hundred eighty-seven".