64010191 has 4 divisors (see below), whose sum is σ = 73154512. Its totient is φ = 54865872.

The previous prime is 64010147. The next prime is 64010201. The reversal of 64010191 is 19101046.

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 64010191 - 2¹¹ = 64008143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64010131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4572150 + ... + 4572163.

It is an arithmetic number, because the mean of its divisors is an integer number (18288628).

Almost surely, 2^64010191 is an apocalyptic number.

64010191 is a deficient number, since it is larger than the sum of its proper divisors (9144321).

64010191 is an equidigital number, since it uses as much as digits as its factorization.

64010191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9144320.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 64010191 is about 8000.6369121464. The cubic root of 64010191 is about 400.0212301232.

The spelling of 64010191 in words is "sixty-four million, ten thousand, one hundred ninety-one".