628555371 has 16 divisors (see below), whose sum is σ = 862752000. Its totient is φ = 406751328.

The previous prime is 628555327. The next prime is 628555387. The reversal of 628555371 is 173555826.

It is not a de Polignac number, because 628555371 - 2⁷ = 628555243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628555391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42280 + ... + 55178.

It is an arithmetic number, because the mean of its divisors is an integer number (53922000).

Almost surely, 2^628555371 is an apocalyptic number.

628555371 is a deficient number, since it is larger than the sum of its proper divisors (234196629).

628555371 is a wasteful number, since it uses less digits than its factorization.

628555371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13378.

The product of its digits is 252000, while the sum is 42.

The square root of 628555371 is about 25071.0065813082. The cubic root of 628555371 is about 856.6061352221.

The spelling of 628555371 in words is "six hundred twenty-eight million, five hundred fifty-five thousand, three hundred seventy-one".