551697768 has 24 divisors (see below), whose sum is σ = 1494181650. Its totient is φ = 183899232.

The previous prime is 551697743. The next prime is 551697781. The reversal of 551697768 is 867796155.

It can be written as a sum of positive squares in only one way, i.e., 477772164 + 73925604 = 21858^2 + 8598^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 5 ways as a sum of consecutive naturals, for example, 3831163 + ... + 3831306.

Almost surely, 2^551697768 is an apocalyptic number.

It is an amenable number.

551697768 is an abundant number, since it is smaller than the sum of its proper divisors (942483882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551697768 is a wasteful number, since it uses less digits than its factorization.

551697768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662481 (or 7662474 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 551697768 is about 23488.2474442007. The cubic root of 551697768 is about 820.1634455077.

The spelling of 551697768 in words is "five hundred fifty-one million, six hundred ninety-seven thousand, seven hundred sixty-eight".