745081 has 4 divisors (see below), whose sum is σ = 747664. Its totient is φ = 742500.

The previous prime is 745067. The next prime is 745103. The reversal of 745081 is 180547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 745081 - 2¹³ = 736889 is a prime.

It is a super-2 number, since 2×745081² = 1110291393122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745001) 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, 795 + ... + 1456.

It is an arithmetic number, because the mean of its divisors is an integer number (186916).

2⁷⁴⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

745081 is a deficient number, since it is larger than the sum of its proper divisors (2583).

745081 is a wasteful number, since it uses less digits than its factorization.

745081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 745081 is about 863.1807458464. The cubic root of 745081 is about 90.6569623288.

The spelling of 745081 in words is "seven hundred forty-five thousand, eighty-one".