616572643 has 16 divisors (see below), whose sum is σ = 668062080. Its totient is φ = 566931456.

The previous prime is 616572641. The next prime is 616572679. The reversal of 616572643 is 346275616.

It is a cyclic number.

It is not a de Polignac number, because 616572643 - 2¹ = 616572641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616572596 and 616572605.

It is not an unprimeable number, because it can be changed into a prime (616572641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127905 + ... + 132637.

It is an arithmetic number, because the mean of its divisors is an integer number (41753880).

Almost surely, 2^616572643 is an apocalyptic number.

616572643 is a deficient number, since it is larger than the sum of its proper divisors (51489437).

616572643 is a wasteful number, since it uses less digits than its factorization.

616572643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926.

The product of its digits is 181440, while the sum is 40.

The square root of 616572643 is about 24830.8808341549. The cubic root of 616572643 is about 851.1277501378.

The spelling of 616572643 in words is "six hundred sixteen million, five hundred seventy-two thousand, six hundred forty-three".