745136736 has 48 divisors (see below), whose sum is σ = 1962967104. Its totient is φ = 247492224.

The previous prime is 745136729. The next prime is 745136767. The reversal of 745136736 is 637631547.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 13455 + ... + 40881.

It is an arithmetic number, because the mean of its divisors is an integer number (40895148).

Almost surely, 2^745136736 is an apocalyptic number.

It is an amenable number.

745136736 is an abundant number, since it is smaller than the sum of its proper divisors (1217830368).

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

745136736 is a wasteful number, since it uses less digits than its factorization.

745136736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27723 (or 27715 counting only the distinct ones).

The product of its digits is 317520, while the sum is 42.

The square root of 745136736 is about 27297.1928227061. The cubic root of 745136736 is about 906.5922281255.

The spelling of 745136736 in words is "seven hundred forty-five million, one hundred thirty-six thousand, seven hundred thirty-six".