549668026 has 8 divisors (see below), whose sum is σ = 825282324. Its totient is φ = 274573920.

The previous prime is 549667991. The next prime is 549668051. The reversal of 549668026 is 620866945.

It is a Cunningham number, because it is equal to 23445²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 549668025 + 1 = 23445^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127395 + ... + 131638.

Almost surely, 2^549668026 is an apocalyptic number.

549668026 is a deficient number, since it is larger than the sum of its proper divisors (275614298).

549668026 is a wasteful number, since it uses less digits than its factorization.

549668026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260096.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 549668026 is about 23445.0000213265. Note that the first 4 decimals coincide. The cubic root of 549668026 is about 819.1563929631.

The spelling of 549668026 in words is "five hundred forty-nine million, six hundred sixty-eight thousand, twenty-six".