748445 has 4 divisors (see below), whose sum is σ = 898140. Its totient is φ = 598752.

The previous prime is 748441. The next prime is 748453. The reversal of 748445 is 544847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544847 = 23 ⋅23689.

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 662596 = 293^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 748445 - 2² = 748441 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748441) by changing a digit.

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, 74840 + ... + 74849.

It is an arithmetic number, because the mean of its divisors is an integer number (224535).

2⁷⁴⁸⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

748445 is a deficient number, since it is larger than the sum of its proper divisors (149695).

748445 is a wasteful number, since it uses less digits than its factorization.

748445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149694.

The product of its digits is 17920, while the sum is 32.

The square root of 748445 is about 865.1271582837. The cubic root of 748445 is about 90.7931945840.

The spelling of 748445 in words is "seven hundred forty-eight thousand, four hundred forty-five".