667600617 has 4 divisors (see below), whose sum is σ = 890134160. Its totient is φ = 445067076.

The previous prime is 667600601. The next prime is 667600621. The reversal of 667600617 is 716006766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 667600617 - 2⁴ = 667600601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667610617) 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 3 ways as a sum of consecutive naturals, for example, 111266767 + ... + 111266772.

It is an arithmetic number, because the mean of its divisors is an integer number (222533540).

Almost surely, 2^667600617 is an apocalyptic number.

It is an amenable number.

667600617 is a deficient number, since it is larger than the sum of its proper divisors (222533543).

667600617 is a wasteful number, since it uses less digits than its factorization.

667600617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222533542.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 667600617 is about 25837.9685153458. The cubic root of 667600617 is about 873.9882147695.

The spelling of 667600617 in words is "six hundred sixty-seven million, six hundred thousand, six hundred seventeen".