616218623 has 8 divisors (see below), whose sum is σ = 626217600. Its totient is φ = 606261888.

The previous prime is 616218607. The next prime is 616218649. The reversal of 616218623 is 326812616.

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

It is a cyclic number.

It is not a de Polignac number, because 616218623 - 2⁴ = 616218607 is a prime.

It is a super-2 number, since 2×616218623² = 759450782664032258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616218223) 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, 19538 + ... + 40176.

It is an arithmetic number, because the mean of its divisors is an integer number (78277200).

Almost surely, 2^616218623 is an apocalyptic number.

616218623 is a deficient number, since it is larger than the sum of its proper divisors (9998977).

616218623 is a wasteful number, since it uses less digits than its factorization.

616218623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21121.

The product of its digits is 20736, while the sum is 35.

The square root of 616218623 is about 24823.7511871192. The cubic root of 616218623 is about 850.9648204667.

The spelling of 616218623 in words is "six hundred sixteen million, two hundred eighteen thousand, six hundred twenty-three".