66026972 has 12 divisors (see below), whose sum is σ = 126051576. Its totient is φ = 30012240.

The previous prime is 66026953. The next prime is 66026977. The reversal of 66026972 is 27962066.

It is a super-2 number, since 2×66026972² = 8719122062977568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66026977) 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, 750263 + ... + 750350.

It is an arithmetic number, because the mean of its divisors is an integer number (10504298).

Almost surely, 2^66026972 is an apocalyptic number.

It is an amenable number.

66026972 is a deficient number, since it is larger than the sum of its proper divisors (60024604).

66026972 is a wasteful number, since it uses less digits than its factorization.

66026972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500628 (or 1500626 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 66026972 is about 8125.6982469201. The cubic root of 66026972 is about 404.1790452344.

The spelling of 66026972 in words is "sixty-six million, twenty-six thousand, nine hundred seventy-two".