640418114 has 16 divisors (see below), whose sum is σ = 1124637696. Its totient is φ = 267770400.

The previous prime is 640418111. The next prime is 640418131. The reversal of 640418114 is 411814046.

It is not an unprimeable number, because it can be changed into a prime (640418111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557282 + ... + 558429.

It is an arithmetic number, because the mean of its divisors is an integer number (70289856).

Almost surely, 2^640418114 is an apocalyptic number.

640418114 is a deficient number, since it is larger than the sum of its proper divisors (484219582).

640418114 is a wasteful number, since it uses less digits than its factorization.

640418114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115761.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 640418114 is about 25306.4836356219. The cubic root of 640418114 is about 861.9615016820.

The spelling of 640418114 in words is "six hundred forty million, four hundred eighteen thousand, one hundred fourteen".