497705691 has 24 divisors (see below), whose sum is σ = 774280704. Its totient is φ = 284374440.

The previous prime is 497705657. The next prime is 497705731. The reversal of 497705691 is 196507794.

It is a happy number.

It is not a de Polignac number, because 497705691 - 2¹⁴ = 497689307 is a prime.

497705691 is a modest number, since divided by 5691 gives 4977 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 497705691.

It is not an unprimeable number, because it can be changed into a prime (497705291) 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 in 23 ways as a sum of consecutive naturals, for example, 45486 + ... + 55356.

It is an arithmetic number, because the mean of its divisors is an integer number (32261696).

Almost surely, 2^497705691 is an apocalyptic number.

497705691 is a deficient number, since it is larger than the sum of its proper divisors (276575013).

497705691 is an frugal number, since it uses more digits than its factorization.

497705691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909 (or 9881 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 497705691 is about 22309.3184790571. The cubic root of 497705691 is about 792.4846682077.

The spelling of 497705691 in words is "four hundred ninety-seven million, seven hundred five thousand, six hundred ninety-one".