745666539 has 16 divisors (see below), whose sum is σ = 1004031744. Its totient is φ = 492228000.

The previous prime is 745666511. The next prime is 745666553. The reversal of 745666539 is 935666547.

It is a happy number.

It is not a de Polignac number, because 745666539 - 2²⁰ = 744617963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 745666491 and 745666500.

It is not an unprimeable number, because it can be changed into a prime (745665539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147457 + ... + 152429.

It is an arithmetic number, because the mean of its divisors is an integer number (62751984).

Almost surely, 2^745666539 is an apocalyptic number.

745666539 is a deficient number, since it is larger than the sum of its proper divisors (258365205).

745666539 is a wasteful number, since it uses less digits than its factorization.

745666539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5458.

The product of its digits is 4082400, while the sum is 51.

The square root of 745666539 is about 27306.8954478535. The cubic root of 745666539 is about 906.8070439514.

The spelling of 745666539 in words is "seven hundred forty-five million, six hundred sixty-six thousand, five hundred thirty-nine".