628641105 has 8 divisors (see below), whose sum is σ = 1005825792. Its totient is φ = 335275248.

The previous prime is 628641103. The next prime is 628641107. The reversal of 628641105 is 501146826.

It is an interprime number because it is at equal distance from previous prime (628641103) and next prime (628641107).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628641105 - 2¹ = 628641103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628641103) 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, 20954689 + ... + 20954718.

It is an arithmetic number, because the mean of its divisors is an integer number (125728224).

Almost surely, 2^628641105 is an apocalyptic number.

It is an amenable number.

628641105 is a deficient number, since it is larger than the sum of its proper divisors (377184687).

628641105 is a wasteful number, since it uses less digits than its factorization.

628641105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41909415.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 628641105 is about 25072.7163466586. The cubic root of 628641105 is about 856.6450800444.

The spelling of 628641105 in words is "six hundred twenty-eight million, six hundred forty-one thousand, one hundred five".