640151106 has 32 divisors (see below), whose sum is σ = 1470648960. Its totient is φ = 181969536.

The previous prime is 640151093. The next prime is 640151107. The reversal of 640151106 is 601151046.

640151106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (640151107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30411 + ... + 46958.

It is an arithmetic number, because the mean of its divisors is an integer number (45957780).

Almost surely, 2^640151106 is an apocalyptic number.

640151106 is an abundant number, since it is smaller than the sum of its proper divisors (830497854).

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

640151106 is a wasteful number, since it uses less digits than its factorization.

640151106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77578.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 640151106 is about 25301.2075996384. The cubic root of 640151106 is about 861.8416931775.

The spelling of 640151106 in words is "six hundred forty million, one hundred fifty-one thousand, one hundred six".