4664581 has 2 divisors, whose sum is σ = 4664582. Its totient is φ = 4664580.

The previous prime is 4664573. The next prime is 4664591. The reversal of 4664581 is 1854664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 2056356 = 1615^2 + 1434^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664581 - 2³ = 4664573 is a prime.

It is a super-2 number, since 2×4664581² = 43516631811122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4664521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2332290 + 2332291.

It is an arithmetic number, because the mean of its divisors is an integer number (2332291).

Almost surely, 2^4664581 is an apocalyptic number.

It is an amenable number.

4664581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4664581 is an equidigital number, since it uses as much as digits as its factorization.

4664581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 4664581 is about 2159.7641074895. The cubic root of 4664581 is about 167.0850320548.

The spelling of 4664581 in words is "four million, six hundred sixty-four thousand, five hundred eighty-one".