745427 has 4 divisors (see below), whose sum is σ = 784680. Its totient is φ = 706176.

The previous prime is 745397. The next prime is 745471. The reversal of 745427 is 724547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 745427 - 2¹⁶ = 679891 is a prime.

It is a super-2 number, since 2×745427² = 1111322824658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745427.

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 3 ways as a sum of consecutive naturals, for example, 19598 + ... + 19635.

It is an arithmetic number, because the mean of its divisors is an integer number (196170).

2⁷⁴⁵⁴²⁷ is an apocalyptic number.

745427 is a deficient number, since it is larger than the sum of its proper divisors (39253).

745427 is a wasteful number, since it uses less digits than its factorization.

745427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39252.

The product of its digits is 7840, while the sum is 29.

The square root of 745427 is about 863.3811441073. The cubic root of 745427 is about 90.6709932215.

The spelling of 745427 in words is "seven hundred forty-five thousand, four hundred twenty-seven".