627312005 has 18 divisors (see below), whose sum is σ = 788545926. Its totient is φ = 479044368.

The previous prime is 627311989. The next prime is 627312043. The reversal of 627312005 is 500213726.

It can be written as a sum of positive squares in only one way, i.e., 501849604 + 125462401 = 22402^2 + 11201^2 .

It is not a de Polignac number, because 627312005 - 2⁴ = 627311989 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 17 ways as a sum of consecutive naturals, for example, 1287872 + ... + 1288358.

It is an arithmetic number, because the mean of its divisors is an integer number (43808107).

Almost surely, 2^627312005 is an apocalyptic number.

It is an amenable number.

627312005 is a deficient number, since it is larger than the sum of its proper divisors (161233921).

627312005 is an frugal number, since it uses more digits than its factorization.

627312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 627312005 is about 25046.1974159751. The cubic root of 627312005 is about 856.0409354787.

The spelling of 627312005 in words is "six hundred twenty-seven million, three hundred twelve thousand, five".