616868899 has 4 divisors (see below), whose sum is σ = 619145440. Its totient is φ = 614592360.

The previous prime is 616868891. The next prime is 616868909. The reversal of 616868899 is 998868616.

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 616868899 - 2³ = 616868891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616868891) 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, 1137864 + ... + 1138405.

It is an arithmetic number, because the mean of its divisors is an integer number (154786360).

Almost surely, 2^616868899 is an apocalyptic number.

616868899 is a deficient number, since it is larger than the sum of its proper divisors (2276541).

616868899 is a wasteful number, since it uses less digits than its factorization.

616868899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276540.

The product of its digits is 8957952, while the sum is 61.

The square root of 616868899 is about 24836.8455927881. The cubic root of 616868899 is about 851.2640473128.

The spelling of 616868899 in words is "six hundred sixteen million, eight hundred sixty-eight thousand, eight hundred ninety-nine".