497072761 has 2 divisors, whose sum is σ = 497072762. Its totient is φ = 497072760.

The previous prime is 497072759. The next prime is 497072767. The reversal of 497072761 is 167270794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451307536 + 45765225 = 21244^2 + 6765^2 .

It is a cyclic number.

It is not a de Polignac number, because 497072761 - 2¹ = 497072759 is a prime.

Together with 497072759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (497072767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248536380 + 248536381.

It is an arithmetic number, because the mean of its divisors is an integer number (248536381).

Almost surely, 2^497072761 is an apocalyptic number.

It is an amenable number.

497072761 is a deficient number, since it is larger than the sum of its proper divisors (1).

497072761 is an equidigital number, since it uses as much as digits as its factorization.

497072761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 497072761 is about 22295.1286383371. The cubic root of 497072761 is about 792.1485926899.

The spelling of 497072761 in words is "four hundred ninety-seven million, seventy-two thousand, seven hundred sixty-one".