497221867 has 2 divisors, whose sum is σ = 497221868. Its totient is φ = 497221866.

The previous prime is 497221859. The next prime is 497221931. The reversal of 497221867 is 768122794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 497221867 - 2³ = 497221859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (497221817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248610933 + 248610934.

It is an arithmetic number, because the mean of its divisors is an integer number (248610934).

Almost surely, 2^497221867 is an apocalyptic number.

497221867 is a deficient number, since it is larger than the sum of its proper divisors (1).

497221867 is an equidigital number, since it uses as much as digits as its factorization.

497221867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 497221867 is about 22298.4723019314. The cubic root of 497221867 is about 792.2277912226.

The spelling of 497221867 in words is "four hundred ninety-seven million, two hundred twenty-one thousand, eight hundred sixty-seven".