148236565 has 4 divisors (see below), whose sum is σ = 177883884. Its totient is φ = 118589248.

The previous prime is 148236563. The next prime is 148236581. The reversal of 148236565 is 565632841.

148236565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 77827684 + 70408881 = 8822^2 + 8391^2 .

It is a cyclic number.

It is not a de Polignac number, because 148236565 - 2¹ = 148236563 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148236563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14823652 + ... + 14823661.

It is an arithmetic number, because the mean of its divisors is an integer number (44470971).

Almost surely, 2^148236565 is an apocalyptic number.

It is an amenable number.

148236565 is a deficient number, since it is larger than the sum of its proper divisors (29647319).

148236565 is an equidigital number, since it uses as much as digits as its factorization.

148236565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29647318.

The product of its digits is 172800, while the sum is 40.

The square root of 148236565 is about 12175.2439400613. The cubic root of 148236565 is about 529.2389278079.

The spelling of 148236565 in words is "one hundred forty-eight million, two hundred thirty-six thousand, five hundred sixty-five".