745857 has 12 divisors (see below), whose sum is σ = 1231360. Its totient is φ = 426168.

The previous prime is 745837. The next prime is 745859. The reversal of 745857 is 758547.

745857 is a `hidden beast` number, since 74 + 585 + 7 = 666.

It is not a de Polignac number, because 745857 - 2⁸ = 745601 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5857 + ... + 5982.

2⁷⁴⁵⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

745857 is a deficient number, since it is larger than the sum of its proper divisors (485503).

745857 is a wasteful number, since it uses less digits than its factorization.

745857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11852 (or 11849 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 745857 is about 863.6301291641. The cubic root of 745857 is about 90.6884244087.

The spelling of 745857 in words is "seven hundred forty-five thousand, eight hundred fifty-seven".