7660489 has 4 divisors (see below), whose sum is σ = 8111124. Its totient is φ = 7209856.

The previous prime is 7660469. The next prime is 7660507. The reversal of 7660489 is 9840667.

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 4020025 + 3640464 = 2005^2 + 1908^2 .

It is a cyclic number.

It is not a de Polignac number, because 7660489 - 2⁷ = 7660361 is a prime.

It is a Duffinian number.

7660489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7660409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225292 + ... + 225325.

It is an arithmetic number, because the mean of its divisors is an integer number (2027781).

Almost surely, 2^7660489 is an apocalyptic number.

It is an amenable number.

7660489 is a deficient number, since it is larger than the sum of its proper divisors (450635).

7660489 is a wasteful number, since it uses less digits than its factorization.

7660489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450634.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 7660489 is about 2767.7588406507. The cubic root of 7660489 is about 197.1297469553.

The spelling of 7660489 in words is "seven million, six hundred sixty thousand, four hundred eighty-nine".