667536953 has 2 divisors, whose sum is σ = 667536954. Its totient is φ = 667536952.

The previous prime is 667536907. The next prime is 667537001. The reversal of 667536953 is 359635766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625650169 + 41886784 = 25013^2 + 6472^2 .

It is a cyclic number.

It is not a de Polignac number, because 667536953 - 2⁸ = 667536697 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (667536053) 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 as a sum of consecutive naturals, namely, 333768476 + 333768477.

It is an arithmetic number, because the mean of its divisors is an integer number (333768477).

Almost surely, 2^667536953 is an apocalyptic number.

It is an amenable number.

667536953 is a deficient number, since it is larger than the sum of its proper divisors (1).

667536953 is an equidigital number, since it uses as much as digits as its factorization.

667536953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 50.

The square root of 667536953 is about 25836.7365005722. The cubic root of 667536953 is about 873.9604320138.

The spelling of 667536953 in words is "six hundred sixty-seven million, five hundred thirty-six thousand, nine hundred fifty-three".