66170026 has 8 divisors (see below), whose sum is σ = 106890084. Its totient is φ = 30540000.

The previous prime is 66170021. The next prime is 66170029. The reversal of 66170026 is 62007166.

It can be written as a sum of positive squares in 2 ways, for example, as 62425801 + 3744225 = 7901^2 + 1935^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 66169976 and 66170003.

It is not an unprimeable number, because it can be changed into a prime (66170021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272475 + ... + 1272526.

Almost surely, 2^66170026 is an apocalyptic number.

66170026 is a deficient number, since it is larger than the sum of its proper divisors (40720058).

66170026 is a wasteful number, since it uses less digits than its factorization.

66170026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545016.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66170026 is about 8134.4960507704. The cubic root of 66170026 is about 404.4707327090.

The spelling of 66170026 in words is "sixty-six million, one hundred seventy thousand, twenty-six".