551646616 has 16 divisors (see below), whose sum is σ = 1062293040. Its totient is φ = 268368480.

The previous prime is 551646593. The next prime is 551646647. The reversal of 551646616 is 616646155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931540 + ... + 932131.

It is an arithmetic number, because the mean of its divisors is an integer number (66393315).

Almost surely, 2^551646616 is an apocalyptic number.

It is an amenable number.

551646616 is a deficient number, since it is larger than the sum of its proper divisors (510646424).

551646616 is a wasteful number, since it uses less digits than its factorization.

551646616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863714 (or 1863710 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 551646616 is about 23487.1585339734. The cubic root of 551646616 is about 820.1380969082.

The spelling of 551646616 in words is "five hundred fifty-one million, six hundred forty-six thousand, six hundred sixteen".