645275336 has 16 divisors (see below), whose sum is σ = 1213056000. Its totient is φ = 321793744.

The previous prime is 645275333. The next prime is 645275339. The reversal of 645275336 is 633572546.

645275336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (645275333) and next prime (645275339).

It is a junction number, because it is equal to n+sod(n) for n = 645275293 and 645275302.

It is not an unprimeable number, because it can be changed into a prime (645275333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102236 + ... + 108363.

It is an arithmetic number, because the mean of its divisors is an integer number (75816000).

Almost surely, 2^645275336 is an apocalyptic number.

It is an amenable number.

645275336 is a deficient number, since it is larger than the sum of its proper divisors (567780664).

645275336 is a wasteful number, since it uses less digits than its factorization.

645275336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210988 (or 210984 counting only the distinct ones).

The product of its digits is 453600, while the sum is 41.

The square root of 645275336 is about 25402.2702922396. The cubic root of 645275336 is about 864.1351847516.

The spelling of 645275336 in words is "six hundred forty-five million, two hundred seventy-five thousand, three hundred thirty-six".