645628262 has 16 divisors (see below), whose sum is σ = 1015096320. Its totient is φ = 307389192.

The previous prime is 645628253. The next prime is 645628343. The reversal of 645628262 is 262826546.

645628262 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21212 + ... + 41727.

It is an arithmetic number, because the mean of its divisors is an integer number (63443520).

Almost surely, 2^645628262 is an apocalyptic number.

645628262 is a deficient number, since it is larger than the sum of its proper divisors (369468058).

645628262 is a wasteful number, since it uses less digits than its factorization.

645628262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63187.

The product of its digits is 276480, while the sum is 41.

The square root of 645628262 is about 25409.2160839330. The cubic root of 645628262 is about 864.2926990059.

The spelling of 645628262 in words is "six hundred forty-five million, six hundred twenty-eight thousand, two hundred sixty-two".