628244545 has 8 divisors (see below), whose sum is σ = 779889960. Its totient is φ = 485264640.

The previous prime is 628244527. The next prime is 628244579. The reversal of 628244545 is 545442826.

It can be written as a sum of positive squares in 4 ways, for example, as 17363889 + 610880656 = 4167^2 + 24716^2 .

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

It is not a de Polignac number, because 628244545 - 2²³ = 619855937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628244498 and 628244507.

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, 2166216 + ... + 2166505.

It is an arithmetic number, because the mean of its divisors is an integer number (97486245).

Almost surely, 2^628244545 is an apocalyptic number.

It is an amenable number.

628244545 is a deficient number, since it is larger than the sum of its proper divisors (151645415).

628244545 is a wasteful number, since it uses less digits than its factorization.

628244545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332755.

The product of its digits is 307200, while the sum is 40.

The square root of 628244545 is about 25064.8069013108. The cubic root of 628244545 is about 856.4649122573.

The spelling of 628244545 in words is "six hundred twenty-eight million, two hundred forty-four thousand, five hundred forty-five".