641063914 has 16 divisors (see below), whose sum is σ = 1071748800. Its totient is φ = 285799104.

The previous prime is 641063837. The next prime is 641063921. The reversal of 641063914 is 419360146.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 641063914.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495534 + ... + 496825.

It is an arithmetic number, because the mean of its divisors is an integer number (66984300).

Almost surely, 2^641063914 is an apocalyptic number.

641063914 is a deficient number, since it is larger than the sum of its proper divisors (430684886).

641063914 is a wasteful number, since it uses less digits than its factorization.

641063914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992397.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 641063914 is about 25319.2399964928. The cubic root of 641063914 is about 862.2511394043.

The spelling of 641063914 in words is "six hundred forty-one million, sixty-three thousand, nine hundred fourteen".