162536665 has 4 divisors (see below), whose sum is σ = 195044004. Its totient is φ = 130029328.

The previous prime is 162536657. The next prime is 162536683. The reversal of 162536665 is 566635261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566635261 = 251 ⋅2257511.

It can be written as a sum of positive squares in 2 ways, for example, as 87385104 + 75151561 = 9348^2 + 8669^2 .

It is a cyclic number.

It is not a de Polignac number, because 162536665 - 2³ = 162536657 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, 16253662 + ... + 16253671.

It is an arithmetic number, because the mean of its divisors is an integer number (48761001).

Almost surely, 2^162536665 is an apocalyptic number.

It is an amenable number.

162536665 is a deficient number, since it is larger than the sum of its proper divisors (32507339).

162536665 is an equidigital number, since it uses as much as digits as its factorization.

162536665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32507338.

The product of its digits is 194400, while the sum is 40.

The square root of 162536665 is about 12748.9868224891. The cubic root of 162536665 is about 545.7374804135.

The spelling of 162536665 in words is "one hundred sixty-two million, five hundred thirty-six thousand, six hundred sixty-five".