627928466261 has 4 divisors (see below), whose sum is σ = 627930062892. Its totient is φ = 627926869632.

The previous prime is 627928466233. The next prime is 627928466267. The reversal of 627928466261 is 162664829726.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 387171417361 + 240757048900 = 622231^2 + 490670^2 .

It is a cyclic number.

It is not a de Polignac number, because 627928466261 - 2¹⁸ = 627928204117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 627928466261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627928466267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253895 + ... + 1149051.

It is an arithmetic number, because the mean of its divisors is an integer number (156982515723).

Almost surely, 2^627928466261 is an apocalyptic number.

It is an amenable number.

627928466261 is a deficient number, since it is larger than the sum of its proper divisors (1596631).

627928466261 is an equidigital number, since it uses as much as digits as its factorization.

627928466261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596630.

The product of its digits is 20901888, while the sum is 59.

The spelling of 627928466261 in words is "six hundred twenty-seven billion, nine hundred twenty-eight million, four hundred sixty-six thousand, two hundred sixty-one".