616873871 has 4 divisors (see below), whose sum is σ = 625324272. Its totient is φ = 608423472.

The previous prime is 616873811. The next prime is 616873909. The reversal of 616873871 is 178378616.

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 616873871 - 2¹⁸ = 616611727 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 (616873811) 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, 4225091 + ... + 4225236.

It is an arithmetic number, because the mean of its divisors is an integer number (156331068).

Almost surely, 2^616873871 is an apocalyptic number.

616873871 is a deficient number, since it is larger than the sum of its proper divisors (8450401).

616873871 is an equidigital number, since it uses as much as digits as its factorization.

616873871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450400.

The product of its digits is 338688, while the sum is 47.

The square root of 616873871 is about 24836.9456858125. The cubic root of 616873871 is about 851.2663343863.

The spelling of 616873871 in words is "six hundred sixteen million, eight hundred seventy-three thousand, eight hundred seventy-one".