64193641 has 4 divisors (see below), whose sum is σ = 64548484. Its totient is φ = 63838800.

The previous prime is 64193639. The next prime is 64193669. The reversal of 64193641 is 14639146.

64193641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26739241 + 37454400 = 5171^2 + 6120^2 .

It is a cyclic number.

It is not a de Polignac number, because 64193641 - 2¹ = 64193639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64193597 and 64193606.

It is not an unprimeable number, because it can be changed into a prime (64193671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177150 + ... + 177511.

It is an arithmetic number, because the mean of its divisors is an integer number (16137121).

Almost surely, 2^64193641 is an apocalyptic number.

It is an amenable number.

64193641 is a deficient number, since it is larger than the sum of its proper divisors (354843).

64193641 is a wasteful number, since it uses less digits than its factorization.

64193641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354842.

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

The square root of 64193641 is about 8012.0934218218. The cubic root of 64193641 is about 400.4030125658.

The spelling of 64193641 in words is "sixty-four million, one hundred ninety-three thousand, six hundred forty-one".