165436006 has 4 divisors (see below), whose sum is σ = 248154012. Its totient is φ = 82718002.

The previous prime is 165435997. The next prime is 165436009. The reversal of 165436006 is 600634561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600634561 = 22171 ⋅27091.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165436009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41359000 + ... + 41359003.

It is an arithmetic number, because the mean of its divisors is an integer number (62038503).

Almost surely, 2^165436006 is an apocalyptic number.

165436006 is a deficient number, since it is larger than the sum of its proper divisors (82718006).

165436006 is an equidigital number, since it uses as much as digits as its factorization.

165436006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82718005.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 165436006 is about 12862.1928923493. The cubic root of 165436006 is about 548.9633431729.

The spelling of 165436006 in words is "one hundred sixty-five million, four hundred thirty-six thousand, six".