628065278 has 16 divisors (see below), whose sum is σ = 984696480. Its totient is φ = 299878656.

The previous prime is 628065253. The next prime is 628065281. The reversal of 628065278 is 872560826.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17318 + ... + 39446.

It is an arithmetic number, because the mean of its divisors is an integer number (61543530).

Almost surely, 2^628065278 is an apocalyptic number.

628065278 is a deficient number, since it is larger than the sum of its proper divisors (356631202).

628065278 is a wasteful number, since it uses less digits than its factorization.

628065278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22771.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 628065278 is about 25061.2305763304. The cubic root of 628065278 is about 856.3834415929.

The spelling of 628065278 in words is "six hundred twenty-eight million, sixty-five thousand, two hundred seventy-eight".