645100150 has 48 divisors (see below), whose sum is σ = 1240858080. Its totient is φ = 249350400.

The previous prime is 645100121. The next prime is 645100189. The reversal of 645100150 is 51001546.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 222007 + ... + 224893.

It is an arithmetic number, because the mean of its divisors is an integer number (25851210).

Almost surely, 2^645100150 is an apocalyptic number.

645100150 is a deficient number, since it is larger than the sum of its proper divisors (595757930).

645100150 is a wasteful number, since it uses less digits than its factorization.

645100150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049 (or 3044 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 645100150 is about 25398.8218230689. The cubic root of 645100150 is about 864.0569762309.

Adding to 645100150 its reverse (51001546), we get a palindrome (696101696).

The spelling of 645100150 in words is "six hundred forty-five million, one hundred thousand, one hundred fifty".