7236665 has 4 divisors (see below), whose sum is σ = 8684004. Its totient is φ = 5789328.

The previous prime is 7236643. The next prime is 7236683. The reversal of 7236665 is 5666327.

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 1567504 + 5669161 = 1252^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 7236665 - 2¹² = 7232569 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723662 + ... + 723671.

It is an arithmetic number, because the mean of its divisors is an integer number (2171001).

Almost surely, 2^7236665 is an apocalyptic number.

It is an amenable number.

7236665 is a deficient number, since it is larger than the sum of its proper divisors (1447339).

7236665 is a wasteful number, since it uses less digits than its factorization.

7236665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447338.

The product of its digits is 45360, while the sum is 35.

The square root of 7236665 is about 2690.1050165375. The cubic root of 7236665 is about 193.4250968138.

The spelling of 7236665 in words is "seven million, two hundred thirty-six thousand, six hundred sixty-five".