628206157 has 8 divisors (see below), whose sum is σ = 630812160. Its totient is φ = 625606560.

The previous prime is 628206143. The next prime is 628206181. The reversal of 628206157 is 751602826.

It is a happy number.

628206157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 628206157 - 2¹⁹ = 627681869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628206127) 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, 296532 + ... + 298642.

It is an arithmetic number, because the mean of its divisors is an integer number (78851520).

Almost surely, 2^628206157 is an apocalyptic number.

It is an amenable number.

628206157 is a deficient number, since it is larger than the sum of its proper divisors (2606003).

628206157 is a wasteful number, since it uses less digits than its factorization.

628206157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 628206157 is about 25064.0411147125. The cubic root of 628206157 is about 856.4474675404.

The spelling of 628206157 in words is "six hundred twenty-eight million, two hundred six thousand, one hundred fifty-seven".