616318399 has 4 divisors (see below), whose sum is σ = 616381600. Its totient is φ = 616255200.

The previous prime is 616318387. The next prime is 616318403. The reversal of 616318399 is 993813616.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 616318399 - 2⁹ = 616317887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616318349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13527 + ... + 37624.

It is an arithmetic number, because the mean of its divisors is an integer number (154095400).

Almost surely, 2^616318399 is an apocalyptic number.

616318399 is a deficient number, since it is larger than the sum of its proper divisors (63201).

616318399 is a wasteful number, since it uses less digits than its factorization.

616318399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63200.

The product of its digits is 209952, while the sum is 46.

The square root of 616318399 is about 24825.7607939817. The cubic root of 616318399 is about 851.0107464204.

The spelling of 616318399 in words is "six hundred sixteen million, three hundred eighteen thousand, three hundred ninety-nine".