628085893 has 4 divisors (see below), whose sum is σ = 665032140. Its totient is φ = 591139648.

The previous prime is 628085851. The next prime is 628085897. The reversal of 628085893 is 398580826.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 529322049 + 98763844 = 23007^2 + 9938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628085893 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628085897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18473098 + ... + 18473131.

It is an arithmetic number, because the mean of its divisors is an integer number (166258035).

Almost surely, 2^628085893 is an apocalyptic number.

It is an amenable number.

628085893 is a deficient number, since it is larger than the sum of its proper divisors (36946247).

628085893 is a wasteful number, since it uses less digits than its factorization.

628085893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36946246.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 628085893 is about 25061.6418656081. The cubic root of 628085893 is about 856.3928111877.

The spelling of 628085893 in words is "six hundred twenty-eight million, eighty-five thousand, eight hundred ninety-three".