7980066 has 16 divisors (see below), whose sum is σ = 17733600. Its totient is φ = 2660004.

The previous prime is 7980061. The next prime is 7980067. The reversal of 7980066 is 6600897.

It is a self number, because there is not a number n which added to its sum of digits gives 7980066.

It is not an unprimeable number, because it can be changed into a prime (7980061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73836 + ... + 73943.

It is an arithmetic number, because the mean of its divisors is an integer number (1108350).

Almost surely, 2^7980066 is an apocalyptic number.

7980066 is an abundant number, since it is smaller than the sum of its proper divisors (9753534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7980066 is a wasteful number, since it uses less digits than its factorization.

7980066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147790 (or 147784 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 7980066 is about 2824.9010602143. The cubic root of 7980066 is about 199.8337451683.

The spelling of 7980066 in words is "seven million, nine hundred eighty thousand, sixty-six".