2361665 has 4 divisors (see below), whose sum is σ = 2834004. Its totient is φ = 1889328.

The previous prime is 2361649. The next prime is 2361701. The reversal of 2361665 is 5661632.

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 1032256 + 1329409 = 1016^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 2361665 - 2⁴ = 2361649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236162 + ... + 236171.

It is an arithmetic number, because the mean of its divisors is an integer number (708501).

2^2361665 is an apocalyptic number.

It is an amenable number.

2361665 is a deficient number, since it is larger than the sum of its proper divisors (472339).

2361665 is an equidigital number, since it uses as much as digits as its factorization.

2361665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472338.

The product of its digits is 6480, while the sum is 29.

The square root of 2361665 is about 1536.7709653686. The cubic root of 2361665 is about 133.1699074105.

The spelling of 2361665 in words is "two million, three hundred sixty-one thousand, six hundred sixty-five".