551668706 has 4 divisors (see below), whose sum is σ = 827503062. Its totient is φ = 275834352.

The previous prime is 551668699. The next prime is 551668727. The reversal of 551668706 is 607866155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 517153081 + 34515625 = 22741^2 + 5875^2 .

It is a super-2 number, since 2×551668706² = 608676722359428872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137917175 + ... + 137917178.

Almost surely, 2^551668706 is an apocalyptic number.

551668706 is a deficient number, since it is larger than the sum of its proper divisors (275834356).

551668706 is a wasteful number, since it uses less digits than its factorization.

551668706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275834355.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 551668706 is about 23487.6287862355. The cubic root of 551668706 is about 820.1490438975.

The spelling of 551668706 in words is "five hundred fifty-one million, six hundred sixty-eight thousand, seven hundred six".