645803335 has 8 divisors (see below), whose sum is σ = 775508256. Its totient is φ = 516279840.

The previous prime is 645803311. The next prime is 645803339. The reversal of 645803335 is 533308546.

It is a happy number.

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

It is not a de Polignac number, because 645803335 - 2⁵ = 645803303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 645803294 and 645803303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645803339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37396 + ... + 51865.

It is an arithmetic number, because the mean of its divisors is an integer number (96938532).

Almost surely, 2^645803335 is an apocalyptic number.

645803335 is a deficient number, since it is larger than the sum of its proper divisors (129704921).

645803335 is a wasteful number, since it uses less digits than its factorization.

645803335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90713.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 645803335 is about 25412.6609193134. The cubic root of 645803335 is about 864.3708144631.

The spelling of 645803335 in words is "six hundred forty-five million, eight hundred three thousand, three hundred thirty-five".