645225346 has 8 divisors (see below), whose sum is σ = 968120640. Its totient is φ = 322518468.

The previous prime is 645225341. The next prime is 645225349. The reversal of 645225346 is 643522546.

645225346 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 not an unprimeable number, because it can be changed into a prime (645225341) 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, 38206 + ... + 52441.

It is an arithmetic number, because the mean of its divisors is an integer number (121015080).

Almost surely, 2^645225346 is an apocalyptic number.

645225346 is a deficient number, since it is larger than the sum of its proper divisors (322895294).

645225346 is a wasteful number, since it uses less digits than its factorization.

645225346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94208.

The product of its digits is 172800, while the sum is 37.

The square root of 645225346 is about 25401.2863060121. The cubic root of 645225346 is about 864.1128690924.

The spelling of 645225346 in words is "six hundred forty-five million, two hundred twenty-five thousand, three hundred forty-six".