641404146 has 8 divisors (see below), whose sum is σ = 1282808304. Its totient is φ = 213801380.

The previous prime is 641404111. The next prime is 641404157.

641404146 is nontrivially palindromic in base 10.

641404146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

641404146 is an admirable number.

It is a super-2 number, since 2×641404146² = 822798557011978632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53450340 + ... + 53450351.

It is an arithmetic number, because the mean of its divisors is an integer number (160351038).

Almost surely, 2^641404146 is an apocalyptic number.

641404146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

641404146 is a wasteful number, since it uses less digits than its factorization.

641404146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106900696.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 641404146 is about 25325.9579483186. The cubic root of 641404146 is about 862.4036533421.

It can be divided in two parts, 64140 and 4146, that added together give a palindrome (68286).

The spelling of 641404146 in words is "six hundred forty-one million, four hundred four thousand, one hundred forty-six".