745771 has 4 divisors (see below), whose sum is σ = 803152. Its totient is φ = 688392.

The previous prime is 745757. The next prime is 745817. The reversal of 745771 is 177547.

745771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177547 = 43 ⋅4129.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28671 + ... + 28696.

It is an arithmetic number, because the mean of its divisors is an integer number (200788).

2⁷⁴⁵⁷⁷¹ is an apocalyptic number.

745771 is a deficient number, since it is larger than the sum of its proper divisors (57381).

745771 is a wasteful number, since it uses less digits than its factorization.

745771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57380.

The product of its digits is 6860, while the sum is 31.

The square root of 745771 is about 863.5803378957. The cubic root of 745771 is about 90.6849387073.

The spelling of 745771 in words is "seven hundred forty-five thousand, seven hundred seventy-one".