497663985 has 64 divisors (see below), whose sum is σ = 983420928. Its totient is φ = 209274624.

The previous prime is 497663977. The next prime is 497663993. The reversal of 497663985 is 589366794.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (497663977) and next prime (497663993).

It is not a de Polignac number, because 497663985 - 2³ = 497663977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 604284 + ... + 605106.

It is an arithmetic number, because the mean of its divisors is an integer number (15365952).

Almost surely, 2^497663985 is an apocalyptic number.

It is an amenable number.

497663985 is a deficient number, since it is larger than the sum of its proper divisors (485756943).

497663985 is a wasteful number, since it uses less digits than its factorization.

497663985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294.

The product of its digits is 9797760, while the sum is 57.

The square root of 497663985 is about 22308.3837379582. The cubic root of 497663985 is about 792.4625317729.

The spelling of 497663985 in words is "four hundred ninety-seven million, six hundred sixty-three thousand, nine hundred eighty-five".