745989547 has 4 divisors (see below), whose sum is σ = 764184456. Its totient is φ = 727794640.

The previous prime is 745989539. The next prime is 745989617.

745989547 is nontrivially palindromic in base 10.

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 745989547 - 2³ = 745989539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745989491 and 745989500.

It is not an unprimeable number, because it can be changed into a prime (745989247) 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, 9097393 + ... + 9097474.

It is an arithmetic number, because the mean of its divisors is an integer number (191046114).

Almost surely, 2^745989547 is an apocalyptic number.

745989547 is a deficient number, since it is larger than the sum of its proper divisors (18194909).

745989547 is a wasteful number, since it uses less digits than its factorization.

745989547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18194908.

The product of its digits is 12700800, while the sum is 58.

The square root of 745989547 is about 27312.8092110643. The cubic root of 745989547 is about 906.9379620097.

The spelling of 745989547 in words is "seven hundred forty-five million, nine hundred eighty-nine thousand, five hundred forty-seven".