506486865 has 16 divisors (see below), whose sum is σ = 858048768. Its totient is φ = 254236416.

The previous prime is 506486861. The next prime is 506486873. The reversal of 506486865 is 568684605.

It is a happy number.

It is not a de Polignac number, because 506486865 - 2² = 506486861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506486861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992857 + ... + 993366.

It is an arithmetic number, because the mean of its divisors is an integer number (53628048).

Almost surely, 2^506486865 is an apocalyptic number.

It is an amenable number.

506486865 is a deficient number, since it is larger than the sum of its proper divisors (351561903).

506486865 is a wasteful number, since it uses less digits than its factorization.

506486865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986248.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The square root of 506486865 is about 22505.2630511176. The cubic root of 506486865 is about 797.1182070726.

The spelling of 506486865 in words is "five hundred six million, four hundred eighty-six thousand, eight hundred sixty-five".