745565547 has 4 divisors (see below), whose sum is σ = 994087400. Its totient is φ = 497043696.

The previous prime is 745565507. The next prime is 745565551.

745565547 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 745565547 - 2⁷ = 745565419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745565496 and 745565505.

It is not an unprimeable number, because it can be changed into a prime (745565507) 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, 124260922 + ... + 124260927.

It is an arithmetic number, because the mean of its divisors is an integer number (248521850).

Almost surely, 2^745565547 is an apocalyptic number.

745565547 is a deficient number, since it is larger than the sum of its proper divisors (248521853).

745565547 is a wasteful number, since it uses less digits than its factorization.

745565547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248521852.

The product of its digits is 2940000, while the sum is 48.

The square root of 745565547 is about 27305.0461819789. The cubic root of 745565547 is about 906.7661032239.

The spelling of 745565547 in words is "seven hundred forty-five million, five hundred sixty-five thousand, five hundred forty-seven".