667608131 has 8 divisors (see below), whose sum is σ = 686166000. Its totient is φ = 649077408.

The previous prime is 667608107. The next prime is 667608197. The reversal of 667608131 is 131806766.

667608131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 667608131 - 2²² = 663413827 is a prime.

It is a super-2 number, since 2×667608131² = 891401233154626322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667608031) 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, 49445 + ... + 61481.

It is an arithmetic number, because the mean of its divisors is an integer number (85770750).

Almost surely, 2^667608131 is an apocalyptic number.

667608131 is a deficient number, since it is larger than the sum of its proper divisors (18557869).

667608131 is a wasteful number, since it uses less digits than its factorization.

667608131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13573.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 667608131 is about 25838.1139211050. The cubic root of 667608131 is about 873.9914937373.

The spelling of 667608131 in words is "six hundred sixty-seven million, six hundred eight thousand, one hundred thirty-one".