645833802 has 8 divisors (see below), whose sum is σ = 1291667616. Its totient is φ = 215277932.

The previous prime is 645833743. The next prime is 645833803. The reversal of 645833802 is 208338546.

645833802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

645833802 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (645833803) 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, 53819478 + ... + 53819489.

It is an arithmetic number, because the mean of its divisors is an integer number (161458452).

Almost surely, 2^645833802 is an apocalyptic number.

645833802 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

645833802 is a wasteful number, since it uses less digits than its factorization.

645833802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107638972.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 645833802 is about 25413.2603575378. The cubic root of 645833802 is about 864.3844070281.

The spelling of 645833802 in words is "six hundred forty-five million, eight hundred thirty-three thousand, eight hundred two".