66799010 has 8 divisors (see below), whose sum is σ = 120238236. Its totient is φ = 26719600.

The previous prime is 66799009. The next prime is 66799043. The reversal of 66799010 is 1099766.

It can be written as a sum of positive squares in 2 ways, for example, as 64368529 + 2430481 = 8023^2 + 1559^2 .

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

It is a Curzon number.

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, 3339941 + ... + 3339960.

Almost surely, 2^66799010 is an apocalyptic number.

66799010 is a deficient number, since it is larger than the sum of its proper divisors (53439226).

66799010 is a wasteful number, since it uses less digits than its factorization.

66799010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679908.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 66799010 is about 8173.0661321196. The cubic root of 66799010 is about 405.7482686487.

The spelling of 66799010 in words is "sixty-six million, seven hundred ninety-nine thousand, ten".