745773870724 has 27 divisors (see below), whose sum is σ = 1330356792037. Its totient is φ = 365806426544.

The previous prime is 745773870719. The next prime is 745773870761. The reversal of 745773870724 is 427078377547.

It is a happy number.

The square root of 745773870724 is 863582.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 537626232900 + 208147637824 = 733230^2 + 456232^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91535619 + ... + 91543765.

Almost surely, 2^745773870724 is an apocalyptic number.

745773870724 is the 863582-nd square number.

It is an amenable number.

745773870724 is a deficient number, since it is larger than the sum of its proper divisors (584582921313).

745773870724 is an frugal number, since it uses more digits than its factorization.

745773870724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404 (or 8202 counting only the distinct ones).

The product of its (nonzero) digits is 64538880, while the sum is 61.

The spelling of 745773870724 in words is "seven hundred forty-five billion, seven hundred seventy-three million, eight hundred seventy thousand, seven hundred twenty-four".