616858313 has 4 divisors (see below), whose sum is σ = 649324560. Its totient is φ = 584392068.

The previous prime is 616858309. The next prime is 616858343. The reversal of 616858313 is 313858616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616858313 - 2² = 616858309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616858343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16233095 + ... + 16233132.

It is an arithmetic number, because the mean of its divisors is an integer number (162331140).

Almost surely, 2^616858313 is an apocalyptic number.

It is an amenable number.

616858313 is a deficient number, since it is larger than the sum of its proper divisors (32466247).

616858313 is a wasteful number, since it uses less digits than its factorization.

616858313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32466246.

The product of its digits is 103680, while the sum is 41.

The square root of 616858313 is about 24836.6324810752. The cubic root of 616858313 is about 851.2591778109.

The spelling of 616858313 in words is "six hundred sixteen million, eight hundred fifty-eight thousand, three hundred thirteen".