497870865 has 12 divisors (see below), whose sum is σ = 862976244. Its totient is φ = 265531104.

The previous prime is 497870843. The next prime is 497870873. The reversal of 497870865 is 568078794.

497870865 is a `hidden beast` number, since 497 + 8 + 70 + 86 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 393585921 + 104284944 = 19839^2 + 10212^2 .

It is not a de Polignac number, because 497870865 - 2¹⁵ = 497838097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5531854 + ... + 5531943.

It is an arithmetic number, because the mean of its divisors is an integer number (71914687).

Almost surely, 2^497870865 is an apocalyptic number.

497870865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

497870865 is a deficient number, since it is larger than the sum of its proper divisors (365105379).

497870865 is a wasteful number, since it uses less digits than its factorization.

497870865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063808 (or 11063805 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 497870865 is about 22313.0200779724. The cubic root of 497870865 is about 792.5723260259.

The spelling of 497870865 in words is "four hundred ninety-seven million, eight hundred seventy thousand, eight hundred sixty-five".