748145 has 4 divisors (see below), whose sum is σ = 897780. Its totient is φ = 598512.

The previous prime is 748133. The next prime is 748169. The reversal of 748145 is 541847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541847 = 331 ⋅1637.

It can be written as a sum of positive squares in 2 ways, for example, as 80656 + 667489 = 284^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 748145 - 2⁸ = 747889 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 748145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74810 + ... + 74819.

It is an arithmetic number, because the mean of its divisors is an integer number (224445).

2⁷⁴⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

748145 is a deficient number, since it is larger than the sum of its proper divisors (149635).

748145 is a wasteful number, since it uses less digits than its factorization.

748145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149634.

The product of its digits is 4480, while the sum is 29.

The square root of 748145 is about 864.9537559893. The cubic root of 748145 is about 90.7810620521.

The spelling of 748145 in words is "seven hundred forty-eight thousand, one hundred forty-five".