505406707 has 16 divisors (see below), whose sum is σ = 576624160. Its totient is φ = 439126272.

The previous prime is 505406663. The next prime is 505406723. The reversal of 505406707 is 707604505.

It is not a de Polignac number, because 505406707 - 2¹⁹ = 504882419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505406507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32263 + ... + 45295.

It is an arithmetic number, because the mean of its divisors is an integer number (36039010).

Almost surely, 2^505406707 is an apocalyptic number.

505406707 is a deficient number, since it is larger than the sum of its proper divisors (71217453).

505406707 is a wasteful number, since it uses less digits than its factorization.

505406707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13222.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 505406707 is about 22481.2523450096. The cubic root of 505406707 is about 796.5511463558.

The spelling of 505406707 in words is "five hundred five million, four hundred six thousand, seven hundred seven".