627641 has 6 divisors (see below), whose sum is σ = 730170. Its totient is φ = 537936.

The previous prime is 627637. The next prime is 627643. The reversal of 627641 is 146726.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 137641 = 700^2 + 371^2 .

It is not a de Polignac number, because 627641 - 2² = 627637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 627641.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6356 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (121695).

2⁶²⁷⁶⁴¹ is an apocalyptic number.

It is an amenable number.

627641 is a deficient number, since it is larger than the sum of its proper divisors (102529).

627641 is a wasteful number, since it uses less digits than its factorization.

627641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12823 (or 12816 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 627641 is about 792.2379692996. The cubic root of 627641 is about 85.6190560102.

The spelling of 627641 in words is "six hundred twenty-seven thousand, six hundred forty-one".