745855 has 16 divisors (see below), whose sum is σ = 995328. Its totient is φ = 532000.

The previous prime is 745837. The next prime is 745859. The reversal of 745855 is 558547.

It is not a de Polignac number, because 745855 - 2⁷ = 745727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745859) 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 15 ways as a sum of consecutive naturals, for example, 3810 + ... + 4000.

It is an arithmetic number, because the mean of its divisors is an integer number (62208).

2⁷⁴⁵⁸⁵⁵ is an apocalyptic number.

745855 is a deficient number, since it is larger than the sum of its proper divisors (249473).

745855 is a wasteful number, since it uses less digits than its factorization.

745855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278.

The product of its digits is 28000, while the sum is 34.

The square root of 745855 is about 863.6289712602. The cubic root of 745855 is about 90.6883433489.

It can be divided in two parts, 745 and 855, that added together give a square (1600 = 40²).

The spelling of 745855 in words is "seven hundred forty-five thousand, eight hundred fifty-five".