616607723 has 4 divisors (see below), whose sum is σ = 622370520. Its totient is φ = 610844928.

The previous prime is 616607687. The next prime is 616607729. The reversal of 616607723 is 327706616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616607723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616607729) 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, 2881238 + ... + 2881451.

It is an arithmetic number, because the mean of its divisors is an integer number (155592630).

Almost surely, 2^616607723 is an apocalyptic number.

616607723 is a deficient number, since it is larger than the sum of its proper divisors (5762797).

616607723 is a wasteful number, since it uses less digits than its factorization.

616607723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5762796.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 616607723 is about 24831.5872025934. The cubic root of 616607723 is about 851.1438915153.

The spelling of 616607723 in words is "six hundred sixteen million, six hundred seven thousand, seven hundred twenty-three".