66060266 has 16 divisors (see below), whose sum is σ = 107480520. Its totient is φ = 30328320.

The previous prime is 66060259. The next prime is 66060271. The reversal of 66060266 is 66206066.

It can be written as a sum of positive squares in 4 ways, for example, as 29106025 + 36954241 = 5395^2 + 6079^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22301 + ... + 25088.

Almost surely, 2^66060266 is an apocalyptic number.

66060266 is a deficient number, since it is larger than the sum of its proper divisors (41420254).

66060266 is a wasteful number, since it uses less digits than its factorization.

66060266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47449.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66060266 is about 8127.7466742019. The cubic root of 66060266 is about 404.2469693747.

It can be divided in two parts, 6606026 and 6, that multiplied together give a triangular number (39636156 = T₈₉₀₃).

The spelling of 66060266 in words is "sixty-six million, sixty thousand, two hundred sixty-six".