628565371 has 4 divisors (see below), whose sum is σ = 718360432. Its totient is φ = 538770312.

The previous prime is 628565363. The next prime is 628565381. The reversal of 628565371 is 173565826.

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

It is a cyclic number.

It is not a de Polignac number, because 628565371 - 2³ = 628565363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628565341) 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, 44897520 + ... + 44897533.

It is an arithmetic number, because the mean of its divisors is an integer number (179590108).

Almost surely, 2^628565371 is an apocalyptic number.

628565371 is a deficient number, since it is larger than the sum of its proper divisors (89795061).

628565371 is an equidigital number, since it uses as much as digits as its factorization.

628565371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89795060.

The product of its digits is 302400, while the sum is 43.

The square root of 628565371 is about 25071.2060140712. The cubic root of 628565371 is about 856.6106779224.

The spelling of 628565371 in words is "six hundred twenty-eight million, five hundred sixty-five thousand, three hundred seventy-one".