641350111 has 4 divisors (see below), whose sum is σ = 675105400. Its totient is φ = 607594824.

The previous prime is 641350091. The next prime is 641350133. The reversal of 641350111 is 111053146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641350111 - 2⁵ = 641350079 is a prime.

It is a super-2 number, since 2×641350111² = 822659929759424642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641350141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16877616 + ... + 16877653.

It is an arithmetic number, because the mean of its divisors is an integer number (168776350).

Almost surely, 2^641350111 is an apocalyptic number.

641350111 is a deficient number, since it is larger than the sum of its proper divisors (33755289).

641350111 is a wasteful number, since it uses less digits than its factorization.

641350111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33755288.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 641350111 is about 25324.8911350079. The cubic root of 641350111 is about 862.3794349714.

The spelling of 641350111 in words is "six hundred forty-one million, three hundred fifty thousand, one hundred eleven".