66026984 has 8 divisors (see below), whose sum is σ = 123800610. Its totient is φ = 33013488.

The previous prime is 66026977. The next prime is 66027019. The reversal of 66026984 is 48962066.

It can be written as a sum of positive squares in only one way, i.e., 54316900 + 11710084 = 7370^2 + 3422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×66026984² = 8719125232272512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126679 + ... + 4126694.

Almost surely, 2^66026984 is an apocalyptic number.

It is an amenable number.

66026984 is a deficient number, since it is larger than the sum of its proper divisors (57773626).

66026984 is a wasteful number, since it uses less digits than its factorization.

66026984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253379 (or 8253375 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 66026984 is about 8125.6989853181. The cubic root of 66026984 is about 404.1790697201.

The spelling of 66026984 in words is "sixty-six million, twenty-six thousand, nine hundred eighty-four".