645790314 has 32 divisors (see below), whose sum is σ = 1392209280. Its totient is φ = 198522432.

The previous prime is 645790279. The next prime is 645790333. The reversal of 645790314 is 413097546.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99744 + ... + 106020.

It is an arithmetic number, because the mean of its divisors is an integer number (43506540).

Almost surely, 2^645790314 is an apocalyptic number.

645790314 is an abundant number, since it is smaller than the sum of its proper divisors (746418966).

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

645790314 is a wasteful number, since it uses less digits than its factorization.

645790314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 645790314 is about 25412.4047268258. The cubic root of 645790314 is about 864.3650051362.

The spelling of 645790314 in words is "six hundred forty-five million, seven hundred ninety thousand, three hundred fourteen".