626324641 has 4 divisors (see below), whose sum is σ = 643252372. Its totient is φ = 609396912.

The previous prime is 626324623. The next prime is 626324663. The reversal of 626324641 is 146423626.

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 480881041 + 145443600 = 21929^2 + 12060^2 .

It is a cyclic number.

It is not a de Polignac number, because 626324641 - 2²¹ = 624227489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 626324597 and 626324606.

It is not an unprimeable number, because it can be changed into a prime (626325641) 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, 8463810 + ... + 8463883.

It is an arithmetic number, because the mean of its divisors is an integer number (160813093).

Almost surely, 2^626324641 is an apocalyptic number.

It is an amenable number.

626324641 is a deficient number, since it is larger than the sum of its proper divisors (16927731).

626324641 is a wasteful number, since it uses less digits than its factorization.

626324641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16927730.

The product of its digits is 41472, while the sum is 34.

The square root of 626324641 is about 25026.4787974657. The cubic root of 626324641 is about 855.5915749089.

The spelling of 626324641 in words is "six hundred twenty-six million, three hundred twenty-four thousand, six hundred forty-one".