667260131 has 2 divisors, whose sum is σ = 667260132. Its totient is φ = 667260130.

The previous prime is 667260067. The next prime is 667260133. The reversal of 667260131 is 131062766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667260131 - 2⁶ = 667260067 is a prime.

It is a super-2 number, since 2×667260131² = 890472164844274322, which contains 22 as substring.

Together with 667260133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667260133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333630065 + 333630066.

It is an arithmetic number, because the mean of its divisors is an integer number (333630066).

Almost surely, 2^667260131 is an apocalyptic number.

667260131 is a deficient number, since it is larger than the sum of its proper divisors (1).

667260131 is an equidigital number, since it uses as much as digits as its factorization.

667260131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 667260131 is about 25831.3788056310. The cubic root of 667260131 is about 873.8396072796.

The spelling of 667260131 in words is "six hundred sixty-seven million, two hundred sixty thousand, one hundred thirty-one".