628556485 has 4 divisors (see below), whose sum is σ = 754267788. Its totient is φ = 502845184.

The previous prime is 628556479. The next prime is 628556491. The reversal of 628556485 is 584655826.

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

It is an interprime number because it is at equal distance from previous prime (628556479) and next prime (628556491).

It can be written as a sum of positive squares in 2 ways, for example, as 227195329 + 401361156 = 15073^2 + 20034^2 .

It is a cyclic number.

It is not a de Polignac number, because 628556485 - 2³ = 628556477 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 3 ways as a sum of consecutive naturals, for example, 62855644 + ... + 62855653.

It is an arithmetic number, because the mean of its divisors is an integer number (188566947).

Almost surely, 2^628556485 is an apocalyptic number.

It is an amenable number.

628556485 is a deficient number, since it is larger than the sum of its proper divisors (125711303).

628556485 is a wasteful number, since it uses less digits than its factorization.

628556485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125711302.

The product of its digits is 2304000, while the sum is 49.

The square root of 628556485 is about 25071.0287981965. The cubic root of 628556485 is about 856.6066412813.

The spelling of 628556485 in words is "six hundred twenty-eight million, five hundred fifty-six thousand, four hundred eighty-five".