616966723 has 4 divisors (see below), whose sum is σ = 617973808. Its totient is φ = 615959640.

The previous prime is 616966699. The next prime is 616966733. The reversal of 616966723 is 327669616.

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

It is a cyclic number.

It is not a de Polignac number, because 616966723 - 2¹⁷ = 616835651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616966733) 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, 502623 + ... + 503848.

It is an arithmetic number, because the mean of its divisors is an integer number (154493452).

Almost surely, 2^616966723 is an apocalyptic number.

616966723 is a deficient number, since it is larger than the sum of its proper divisors (1007085).

616966723 is a wasteful number, since it uses less digits than its factorization.

616966723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007084.

The product of its digits is 489888, while the sum is 46.

The square root of 616966723 is about 24838.8148469286. The cubic root of 616966723 is about 851.3090431797.

The spelling of 616966723 in words is "six hundred sixteen million, nine hundred sixty-six thousand, seven hundred twenty-three".