745457 has 8 divisors (see below), whose sum is σ = 779520. Its totient is φ = 712080.

The previous prime is 745397. The next prime is 745471. The reversal of 745457 is 754547.

745457 is nontrivially palindromic in base 7.

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

It is a cyclic number.

It is not a de Polignac number, because 745457 - 2⁸ = 745201 is a prime.

It is a super-2 number, since 2×745457² = 1111412277698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4223 + ... + 4395.

It is an arithmetic number, because the mean of its divisors is an integer number (97440).

2⁷⁴⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

745457 is a deficient number, since it is larger than the sum of its proper divisors (34063).

745457 is a wasteful number, since it uses less digits than its factorization.

745457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 19600, while the sum is 32.

The square root of 745457 is about 863.3985174877. The cubic root of 745457 is about 90.6722095684.

The spelling of 745457 in words is "seven hundred forty-five thousand, four hundred fifty-seven".