66570026 has 8 divisors (see below), whose sum is σ = 101261664. Its totient is φ = 32816140.

The previous prime is 66570017. The next prime is 66570029. The reversal of 66570026 is 62007566.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66569974 and 66570001.

It is not an unprimeable number, because it can be changed into a prime (66570029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234260 + ... + 234543.

It is an arithmetic number, because the mean of its divisors is an integer number (12657708).

Almost surely, 2^66570026 is an apocalyptic number.

66570026 is a deficient number, since it is larger than the sum of its proper divisors (34691638).

66570026 is a wasteful number, since it uses less digits than its factorization.

66570026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468876.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66570026 is about 8159.0456549771. The cubic root of 66570026 is about 405.2841089363.

The spelling of 66570026 in words is "sixty-six million, five hundred seventy thousand, twenty-six".