613622643 has 8 divisors (see below), whose sum is σ = 818278656. Its totient is φ = 409024200.

The previous prime is 613622627. The next prime is 613622671. The reversal of 613622643 is 346226316.

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

It is not a de Polignac number, because 613622643 - 2⁴ = 613622627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (613622623) 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, 30378 + ... + 46368.

It is an arithmetic number, because the mean of its divisors is an integer number (102284832).

Almost surely, 2^613622643 is an apocalyptic number.

613622643 is a deficient number, since it is larger than the sum of its proper divisors (204656013).

613622643 is a wasteful number, since it uses less digits than its factorization.

613622643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28785.

The product of its digits is 31104, while the sum is 33.

The square root of 613622643 is about 24771.4077718647. The cubic root of 613622643 is about 849.7681688401.

Adding to 613622643 its reverse (346226316), we get a palindrome (959848959).

The spelling of 613622643 in words is "six hundred thirteen million, six hundred twenty-two thousand, six hundred forty-three".