667248497 has 2 divisors, whose sum is σ = 667248498. Its totient is φ = 667248496.

The previous prime is 667248481. The next prime is 667248503. The reversal of 667248497 is 794842766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 663371536 + 3876961 = 25756^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 667248497 - 2⁴ = 667248481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667248467) 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, 333624248 + 333624249.

It is an arithmetic number, because the mean of its divisors is an integer number (333624249).

Almost surely, 2^667248497 is an apocalyptic number.

It is an amenable number.

667248497 is a deficient number, since it is larger than the sum of its proper divisors (1).

667248497 is an equidigital number, since it uses as much as digits as its factorization.

667248497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 53.

The square root of 667248497 is about 25831.1536134180. The cubic root of 667248497 is about 873.8345286461.

The spelling of 667248497 in words is "six hundred sixty-seven million, two hundred forty-eight thousand, four hundred ninety-seven".