66026992 has 20 divisors (see below), whose sum is σ = 128161440. Its totient is φ = 32953088.

The previous prime is 66026977. The next prime is 66027019. The reversal of 66026992 is 29962066.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 6009 + ... + 12967.

It is an arithmetic number, because the mean of its divisors is an integer number (6408072).

Almost surely, 2^66026992 is an apocalyptic number.

It is an amenable number.

66026992 is a deficient number, since it is larger than the sum of its proper divisors (62134448).

66026992 is a wasteful number, since it uses less digits than its factorization.

66026992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560 (or 7554 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 66026992 is about 8125.6994775835. The cubic root of 66026992 is about 404.1790860439.

The spelling of 66026992 in words is "sixty-six million, twenty-six thousand, nine hundred ninety-two".