505865346 has 16 divisors (see below), whose sum is σ = 1156263744. Its totient is φ = 144532944.

The previous prime is 505865333. The next prime is 505865383. The reversal of 505865346 is 643568505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 12044413 = 505865346 / (5 + 0 + 5 + 8 + 6 + 5 + 3 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 505865298 and 505865307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6022165 + ... + 6022248.

It is an arithmetic number, because the mean of its divisors is an integer number (72266484).

Almost surely, 2^505865346 is an apocalyptic number.

505865346 is an abundant number, since it is smaller than the sum of its proper divisors (650398398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505865346 is a wasteful number, since it uses less digits than its factorization.

505865346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044425.

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 505865346 is about 22491.4505090268. The cubic root of 505865346 is about 796.7920209913.

The spelling of 505865346 in words is "five hundred five million, eight hundred sixty-five thousand, three hundred forty-six".