7980065 has 4 divisors (see below), whose sum is σ = 9576084. Its totient is φ = 6384048.

The previous prime is 7980061. The next prime is 7980067. The reversal of 7980065 is 5600897.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1982464 + 5997601 = 1408^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 7980065 - 2² = 7980061 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 7980 and 65 contains 7980065 itself.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 798002 + ... + 798011.

It is an arithmetic number, because the mean of its divisors is an integer number (2394021).

Almost surely, 2^7980065 is an apocalyptic number.

It is an amenable number.

7980065 is a deficient number, since it is larger than the sum of its proper divisors (1596019).

7980065 is a wasteful number, since it uses less digits than its factorization.

7980065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596018.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 7980065 is about 2824.9008832170. The cubic root of 7980065 is about 199.8337368211.

The spelling of 7980065 in words is "seven million, nine hundred eighty thousand, sixty-five".