745381 has 8 divisors (see below), whose sum is σ = 917504. Its totient is φ = 589680.

The previous prime is 745379. The next prime is 745391. The reversal of 745381 is 183547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 745381 - 2¹ = 745379 is a prime.

It is a super-2 number, since 2×745381² = 1111185670322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745301) 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 7 ways as a sum of consecutive naturals, for example, 4005 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (114688).

2⁷⁴⁵³⁸¹ is an apocalyptic number.

It is an amenable number.

745381 is a deficient number, since it is larger than the sum of its proper divisors (172123).

745381 is a wasteful number, since it uses less digits than its factorization.

745381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211.

The product of its digits is 3360, while the sum is 28.

The square root of 745381 is about 863.3545042449. The cubic root of 745381 is about 90.6691280930.

The spelling of 745381 in words is "seven hundred forty-five thousand, three hundred eighty-one".