497663993 has 2 divisors, whose sum is σ = 497663994. Its totient is φ = 497663992.

The previous prime is 497663977. The next prime is 497664019. The reversal of 497663993 is 399366794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429815824 + 67848169 = 20732^2 + 8237^2 .

It is a cyclic number.

It is not a de Polignac number, because 497663993 - 2⁴ = 497663977 is a prime.

It is not a weakly prime, because it can be changed into another prime (497663953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248831996 + 248831997.

It is an arithmetic number, because the mean of its divisors is an integer number (248831997).

Almost surely, 2^497663993 is an apocalyptic number.

It is an amenable number.

497663993 is a deficient number, since it is larger than the sum of its proper divisors (1).

497663993 is an equidigital number, since it uses as much as digits as its factorization.

497663993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 56.

The square root of 497663993 is about 22308.3839172630. The cubic root of 497663993 is about 792.4625360192.

The spelling of 497663993 in words is "four hundred ninety-seven million, six hundred sixty-three thousand, nine hundred ninety-three".