7485665 has 12 divisors (see below), whose sum is σ = 9874452. Its totient is φ = 5443680.

The previous prime is 7485659. The next prime is 7485679. The reversal of 7485665 is 5665847.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 4231249 = 1804^2 + 2057^2 .

It is not a de Polignac number, because 7485665 - 2²² = 3291361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5582 + ... + 6791.

It is an arithmetic number, because the mean of its divisors is an integer number (822871).

Almost surely, 2^7485665 is an apocalyptic number.

It is an amenable number.

7485665 is a deficient number, since it is larger than the sum of its proper divisors (2388787).

7485665 is a wasteful number, since it uses less digits than its factorization.

7485665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400 (or 12389 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 7485665 is about 2735.9943347895. The cubic root of 7485665 is about 195.6185922360.

It can be divided in two parts, 74856 and 65, that multiplied together give a triangular number (4865640 = T₃₁₁₉).

The spelling of 7485665 in words is "seven million, four hundred eighty-five thousand, six hundred sixty-five".