616739723 has 4 divisors (see below), whose sum is σ = 638006640. Its totient is φ = 595472808.

The previous prime is 616739713. The next prime is 616739729. The reversal of 616739723 is 327937616.

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 616739723 - 2²⁸ = 348304267 is a prime.

It is a super-2 number, since 2×616739723² = 760735771852233458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616739729) 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, 10633415 + ... + 10633472.

It is an arithmetic number, because the mean of its divisors is an integer number (159501660).

Almost surely, 2^616739723 is an apocalyptic number.

616739723 is a deficient number, since it is larger than the sum of its proper divisors (21266917).

616739723 is a wasteful number, since it uses less digits than its factorization.

616739723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21266916.

The product of its digits is 285768, while the sum is 44.

The square root of 616739723 is about 24834.2449653699. The cubic root of 616739723 is about 851.2046232540.

The spelling of 616739723 in words is "six hundred sixteen million, seven hundred thirty-nine thousand, seven hundred twenty-three".