628276605 has 16 divisors (see below), whose sum is σ = 1096628544. Its totient is φ = 304618880.

The previous prime is 628276603. The next prime is 628276609. The reversal of 628276605 is 506672826.

It is not a de Polignac number, because 628276605 - 2¹ = 628276603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628276601) 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, 1903704 + ... + 1904033.

It is an arithmetic number, because the mean of its divisors is an integer number (68539284).

Almost surely, 2^628276605 is an apocalyptic number.

It is an amenable number.

628276605 is a deficient number, since it is larger than the sum of its proper divisors (468351939).

628276605 is a wasteful number, since it uses less digits than its factorization.

628276605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807756.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 628276605 is about 25065.4464352822. The cubic root of 628276605 is about 856.4794807870.

It can be divided in two parts, 628276 and 605, that added together give a triangular number (628881 = T₁₁₂₁).

The spelling of 628276605 in words is "six hundred twenty-eight million, two hundred seventy-six thousand, six hundred five".