745673572 has 18 divisors (see below), whose sum is σ = 1517978742. Its totient is φ = 319574304.

The previous prime is 745673569. The next prime is 745673609. The reversal of 745673572 is 275376547.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 652087296 + 93586276 = 25536^2 + 9674^2 .

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 5 ways as a sum of consecutive naturals, for example, 1902033 + ... + 1902424.

Almost surely, 2^745673572 is an apocalyptic number.

It is an amenable number.

745673572 is an abundant number, since it is smaller than the sum of its proper divisors (772305170).

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

745673572 is a wasteful number, since it uses less digits than its factorization.

745673572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804475 (or 3804466 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 46.

The square root of 745673572 is about 27307.0242245471. The cubic root of 745673572 is about 906.8098948924.

The spelling of 745673572 in words is "seven hundred forty-five million, six hundred seventy-three thousand, five hundred seventy-two".