2668351066 has 4 divisors (see below), whose sum is σ = 4002526602. Its totient is φ = 1334175532.

The previous prime is 2668351057. The next prime is 2668351067. The reversal of 2668351066 is 6601538662.

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., 2598042841 + 70308225 = 50971^2 + 8385^2 .

It is a super-2 number, since 2×2668351066² = 14240194822846672712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2668351067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667087765 + ... + 667087768.

Almost surely, 2^2668351066 is an apocalyptic number.

2668351066 is a deficient number, since it is larger than the sum of its proper divisors (1334175536).

2668351066 is a wasteful number, since it uses less digits than its factorization.

2668351066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334175535.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2668351066 is about 51656.0845012473. The cubic root of 2668351066 is about 1387.0144615647.

The spelling of 2668351066 in words is "two billion, six hundred sixty-eight million, three hundred fifty-one thousand, sixty-six".