627840641 has 4 divisors (see below), whose sum is σ = 627945300. Its totient is φ = 627735984.

The previous prime is 627840611. The next prime is 627840643. The reversal of 627840641 is 146048726.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2640625 + 625200016 = 1625^2 + 25004^2 .

It is a cyclic number.

It is not a de Polignac number, because 627840641 - 2¹⁰ = 627839617 is a prime.

It is a super-3 number, since 3×627840641³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 627840595 and 627840604.

It is not an unprimeable number, because it can be changed into a prime (627840643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42746 + ... + 55523.

It is an arithmetic number, because the mean of its divisors is an integer number (156986325).

Almost surely, 2^627840641 is an apocalyptic number.

It is an amenable number.

627840641 is a deficient number, since it is larger than the sum of its proper divisors (104659).

627840641 is an equidigital number, since it uses as much as digits as its factorization.

627840641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104658.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 627840641 is about 25056.7484123539. The cubic root of 627840641 is about 856.2813299421.

The spelling of 627840641 in words is "six hundred twenty-seven million, eight hundred forty thousand, six hundred forty-one".