628895605 has 16 divisors (see below), whose sum is σ = 838946304. Its totient is φ = 449432640.

The previous prime is 628895599. The next prime is 628895621. The reversal of 628895605 is 506598826.

It is not a de Polignac number, because 628895605 - 2²¹ = 626798453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154039 + ... + 158068.

It is an arithmetic number, because the mean of its divisors is an integer number (52434144).

Almost surely, 2^628895605 is an apocalyptic number.

628895605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

628895605 is a deficient number, since it is larger than the sum of its proper divisors (210050699).

628895605 is a wasteful number, since it uses less digits than its factorization.

628895605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312156.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 628895605 is about 25077.7910709855. The cubic root of 628895605 is about 856.7606662705.

The spelling of 628895605 in words is "six hundred twenty-eight million, eight hundred ninety-five thousand, six hundred five".