497661871 has 8 divisors (see below), whose sum is σ = 570370464. Its totient is φ = 425356800.

The previous prime is 497661869. The next prime is 497661949. The reversal of 497661871 is 178166794.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 497661871 - 2¹ = 497661869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497661821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98230 + ... + 103171.

It is an arithmetic number, because the mean of its divisors is an integer number (71296308).

Almost surely, 2^497661871 is an apocalyptic number.

497661871 is a deficient number, since it is larger than the sum of its proper divisors (72708593).

497661871 is a wasteful number, since it uses less digits than its factorization.

497661871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201761.

The product of its digits is 508032, while the sum is 49.

The square root of 497661871 is about 22308.3363566179. The cubic root of 497661871 is about 792.4614096850.

The spelling of 497661871 in words is "four hundred ninety-seven million, six hundred sixty-one thousand, eight hundred seventy-one".