628093685 has 8 divisors (see below), whose sum is σ = 774083256. Its totient is φ = 488894400.

The previous prime is 628093667. The next prime is 628093699. The reversal of 628093685 is 586390826.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 191158276 + 436935409 = 13826^2 + 20903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628093685 - 2¹⁴ = 628077301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697366 + ... + 1697735.

It is an arithmetic number, because the mean of its divisors is an integer number (96760407).

Almost surely, 2^628093685 is an apocalyptic number.

It is an amenable number.

628093685 is a deficient number, since it is larger than the sum of its proper divisors (145989571).

628093685 is a wasteful number, since it uses less digits than its factorization.

628093685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395143.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 628093685 is about 25061.7973218203. The cubic root of 628093685 is about 856.3963526276.

The spelling of 628093685 in words is "six hundred twenty-eight million, ninety-three thousand, six hundred eighty-five".