504120866 has 4 divisors (see below), whose sum is σ = 756181302. Its totient is φ = 252060432.

The previous prime is 504120817. The next prime is 504120889. The reversal of 504120866 is 668021405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 384983641 + 119137225 = 19621^2 + 10915^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 126030215 + ... + 126030218.

Almost surely, 2^504120866 is an apocalyptic number.

504120866 is a deficient number, since it is larger than the sum of its proper divisors (252060436).

504120866 is a wasteful number, since it uses less digits than its factorization.

504120866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252060435.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 504120866 is about 22452.6360590466. The cubic root of 504120866 is about 795.8750519350.

The spelling of 504120866 in words is "five hundred four million, one hundred twenty thousand, eight hundred sixty-six".