628895228591 has 8 divisors (see below), whose sum is σ = 720796826400. Its totient is φ = 537508486368.

The previous prime is 628895228581. The next prime is 628895228593. The reversal of 628895228591 is 195822598826.

628895228591 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 not a de Polignac number, because 628895228591 - 2¹⁰ = 628895227567 is a prime.

It is a super-2 number, since 2×628895228591² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628895228593) 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, 128711276 + ... + 128716161.

It is an arithmetic number, because the mean of its divisors is an integer number (90099603300).

Almost surely, 2^628895228591 is an apocalyptic number.

628895228591 is a deficient number, since it is larger than the sum of its proper divisors (91901597809).

628895228591 is a wasteful number, since it uses less digits than its factorization.

628895228591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257427793.

The product of its digits is 49766400, while the sum is 65.

The spelling of 628895228591 in words is "six hundred twenty-eight billion, eight hundred ninety-five million, two hundred twenty-eight thousand, five hundred ninety-one".