667524061 has 2 divisors, whose sum is σ = 667524062. Its totient is φ = 667524060.

The previous prime is 667524047. The next prime is 667524083. The reversal of 667524061 is 160425766.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644195161 + 23328900 = 25381^2 + 4830^2 .

It is a cyclic number.

It is not a de Polignac number, because 667524061 - 2¹¹ = 667522013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667524061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667524041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333762030 + 333762031.

It is an arithmetic number, because the mean of its divisors is an integer number (333762031).

Almost surely, 2^667524061 is an apocalyptic number.

It is an amenable number.

667524061 is a deficient number, since it is larger than the sum of its proper divisors (1).

667524061 is an equidigital number, since it uses as much as digits as its factorization.

667524061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 667524061 is about 25836.4870096536. The cubic root of 667524061 is about 873.9548057733.

The spelling of 667524061 in words is "six hundred sixty-seven million, five hundred twenty-four thousand, sixty-one".