667110761 has 2 divisors, whose sum is σ = 667110762. Its totient is φ = 667110760.

The previous prime is 667110749. The next prime is 667110779. The reversal of 667110761 is 167011766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666620761 + 490000 = 25819^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 667110761 - 2¹⁸ = 666848617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667110721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333555380 + 333555381.

It is an arithmetic number, because the mean of its divisors is an integer number (333555381).

Almost surely, 2^667110761 is an apocalyptic number.

It is an amenable number.

667110761 is a deficient number, since it is larger than the sum of its proper divisors (1).

667110761 is an equidigital number, since it uses as much as digits as its factorization.

667110761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 667110761 is about 25828.4873927994. The cubic root of 667110761 is about 873.7743977474.

The spelling of 667110761 in words is "six hundred sixty-seven million, one hundred ten thousand, seven hundred sixty-one".