616021808 has 10 divisors (see below), whose sum is σ = 1193542284. Its totient is φ = 308010896.

The previous prime is 616021807. The next prime is 616021817. The reversal of 616021808 is 808120616.

It is not an unprimeable number, because it can be changed into a prime (616021807) 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 as a sum of consecutive naturals, namely, 19250666 + ... + 19250697.

Almost surely, 2^616021808 is an apocalyptic number.

It is an amenable number.

616021808 is a deficient number, since it is larger than the sum of its proper divisors (577520476).

616021808 is a wasteful number, since it uses less digits than its factorization.

616021808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38501371 (or 38501365 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 616021808 is about 24819.7866227734. The cubic root of 616021808 is about 850.8742138384.

The spelling of 616021808 in words is "six hundred sixteen million, twenty-one thousand, eight hundred eight".