645150006 has 48 divisors (see below), whose sum is σ = 1437443280. Its totient is φ = 208995840.

The previous prime is 645150001. The next prime is 645150029. The reversal of 645150006 is 600051546.

It is a happy number.

645150006 is a `hidden beast` number, since 645 + 15 + 0 + 0 + 0 + 6 = 666.

645150006 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 not an unprimeable number, because it can be changed into a prime (645150001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207310 + ... + 210398.

It is an arithmetic number, because the mean of its divisors is an integer number (29946735).

Almost surely, 2^645150006 is an apocalyptic number.

645150006 is an abundant number, since it is smaller than the sum of its proper divisors (792293274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645150006 is a wasteful number, since it uses less digits than its factorization.

645150006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3418 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 645150006 is about 25399.8032669546. The cubic root of 645150006 is about 864.0792349530.

The spelling of 645150006 in words is "six hundred forty-five million, one hundred fifty thousand, six".