745558605 has 24 divisors (see below), whose sum is σ = 1409784480. Its totient is φ = 361482720.

The previous prime is 745558591. The next prime is 745558631. The reversal of 745558605 is 506855547.

It is not a de Polignac number, because 745558605 - 2¹⁴ = 745542221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752595 + ... + 753584.

It is an arithmetic number, because the mean of its divisors is an integer number (58741020).

Almost surely, 2^745558605 is an apocalyptic number.

It is an amenable number.

745558605 is a deficient number, since it is larger than the sum of its proper divisors (664225875).

745558605 is a wasteful number, since it uses less digits than its factorization.

745558605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506201 (or 1506198 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The square root of 745558605 is about 27304.9190623228. The cubic root of 745558605 is about 906.7632888996.

The spelling of 745558605 in words is "seven hundred forty-five million, five hundred fifty-eight thousand, six hundred five".