66001010 has 8 divisors (see below), whose sum is σ = 118801836. Its totient is φ = 26400400.

The previous prime is 66000997. The next prime is 66001027. The reversal of 66001010 is 1010066.

It can be written as a sum of positive squares in 2 ways, for example, as 57138481 + 8862529 = 7559^2 + 2977^2 .

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

It is a super-2 number, since 2×66001010² = 8712266642040200, which contains 22 as substring.

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, 3300041 + ... + 3300060.

Almost surely, 2^66001010 is an apocalyptic number.

66001010 is a deficient number, since it is larger than the sum of its proper divisors (52800826).

66001010 is a wasteful number, since it uses less digits than its factorization.

66001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6600108.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 66001010 is about 8124.1005656011. The cubic root of 66001010 is about 404.1260634923.

Adding to 66001010 its reverse (1010066), we get a palindrome (67011076).

The spelling of 66001010 in words is "sixty-six million, one thousand, ten".