645226162 has 32 divisors (see below), whose sum is σ = 1149448320. Its totient is φ = 265776000.

The previous prime is 645226123. The next prime is 645226189. The reversal of 645226162 is 261622546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88662 + ... + 95662.

It is an arithmetic number, because the mean of its divisors is an integer number (35920260).

Almost surely, 2^645226162 is an apocalyptic number.

645226162 is a deficient number, since it is larger than the sum of its proper divisors (504222158).

645226162 is a wasteful number, since it uses less digits than its factorization.

645226162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266.

The product of its digits is 34560, while the sum is 34.

The square root of 645226162 is about 25401.3023681858. The cubic root of 645226162 is about 864.1132333660.

The spelling of 645226162 in words is "six hundred forty-five million, two hundred twenty-six thousand, one hundred sixty-two".