4064591 has 4 divisors (see below), whose sum is σ = 4106592. Its totient is φ = 4022592.

The previous prime is 4064579. The next prime is 4064597. The reversal of 4064591 is 1954604.

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 4064591 - 2⁶ = 4064527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4064597) 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, 20855 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (1026648).

Almost surely, 2^4064591 is an apocalyptic number.

4064591 is a deficient number, since it is larger than the sum of its proper divisors (42001).

4064591 is an equidigital number, since it uses as much as digits as its factorization.

4064591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42000.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 4064591 is about 2016.0830836054. The cubic root of 4064591 is about 159.5899788098.

The spelling of 4064591 in words is "four million, sixty-four thousand, five hundred ninety-one".