745889508 has 144 divisors (see below), whose sum is σ = 2333234176. Its totient is φ = 195644160.

The previous prime is 745889453. The next prime is 745889531. The reversal of 745889508 is 805988547.

745889508 is a `hidden beast` number, since 7 + 4 + 58 + 89 + 508 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 730038 + ... + 731058.

Almost surely, 2^745889508 is an apocalyptic number.

745889508 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745889508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166617088).

745889508 is an abundant number, since it is smaller than the sum of its proper divisors (1587344668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745889508 is a wasteful number, since it uses less digits than its factorization.

745889508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The square root of 745889508 is about 27310.9777928217. The cubic root of 745889508 is about 906.8974193403.

The spelling of 745889508 in words is "seven hundred forty-five million, eight hundred eighty-nine thousand, five hundred eight".