645034226 has 16 divisors (see below), whose sum is σ = 977961600. Its totient is φ = 319063728.

The previous prime is 645034193. The next prime is 645034231. The reversal of 645034226 is 622430546.

645034226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×645034226² = 832138305422838152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645034192 and 645034201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77495 + ... + 85413.

It is an arithmetic number, because the mean of its divisors is an integer number (61122600).

Almost surely, 2^645034226 is an apocalyptic number.

645034226 is a deficient number, since it is larger than the sum of its proper divisors (332927374).

645034226 is a wasteful number, since it uses less digits than its factorization.

645034226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8353.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 645034226 is about 25397.5240131789. The cubic root of 645034226 is about 864.0275420247.

The spelling of 645034226 in words is "six hundred forty-five million, thirty-four thousand, two hundred twenty-six".