745720226 has 8 divisors (see below), whose sum is σ = 1118706204. Its totient is φ = 372818160.

The previous prime is 745720219. The next prime is 745720243. The reversal of 745720226 is 622027547.

It can be written as a sum of positive squares in 2 ways, for example, as 734464201 + 11256025 = 27101^2 + 3355^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10976 + ... + 40148.

Almost surely, 2^745720226 is an apocalyptic number.

745720226 is a deficient number, since it is larger than the sum of its proper divisors (372985978).

745720226 is a wasteful number, since it uses less digits than its factorization.

745720226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41956.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 745720226 is about 27307.8784602539. The cubic root of 745720226 is about 906.8288063966.

The spelling of 745720226 in words is "seven hundred forty-five million, seven hundred twenty thousand, two hundred twenty-six".