628145653 has 8 divisors (see below), whose sum is σ = 648700416. Its totient is φ = 607609200.

The previous prime is 628145627. The next prime is 628145657. The reversal of 628145653 is 356541826.

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

It is a cyclic number.

It is not a de Polignac number, because 628145653 - 2⁵ = 628145621 is a prime.

It is a super-2 number, since 2×628145653² = 789133922765592818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628145657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115800 + ... + 121102.

It is an arithmetic number, because the mean of its divisors is an integer number (81087552).

Almost surely, 2^628145653 is an apocalyptic number.

It is an amenable number.

628145653 is a deficient number, since it is larger than the sum of its proper divisors (20554763).

628145653 is a wasteful number, since it uses less digits than its factorization.

628145653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9155.

The product of its digits is 172800, while the sum is 40.

The square root of 628145653 is about 25062.8340975238. The cubic root of 628145653 is about 856.4199711733.

The spelling of 628145653 in words is "six hundred twenty-eight million, one hundred forty-five thousand, six hundred fifty-three".