645216362 has 8 divisors (see below), whose sum is σ = 1106085216. Its totient is φ = 276521292.

The previous prime is 645216359. The next prime is 645216409. The reversal of 645216362 is 263612546.

It is a happy number.

645216362 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.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23043428 + ... + 23043455.

It is an arithmetic number, because the mean of its divisors is an integer number (138260652).

Almost surely, 2^645216362 is an apocalyptic number.

645216362 is a deficient number, since it is larger than the sum of its proper divisors (460868854).

645216362 is a wasteful number, since it uses less digits than its factorization.

645216362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46086892.

The product of its digits is 51840, while the sum is 35.

The square root of 645216362 is about 25401.1094639585. The cubic root of 645216362 is about 864.1088584905.

The spelling of 645216362 in words is "six hundred forty-five million, two hundred sixteen thousand, three hundred sixty-two".