5771661 has 32 divisors (see below), whose sum is σ = 9216000. Its totient is φ = 3210480.

The previous prime is 5771641. The next prime is 5771663. The reversal of 5771661 is 1661775.

It is not a de Polignac number, because 5771661 - 2²² = 1577357 is a prime.

It is a super-3 number, since 3×5771661³ (a number of 21 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 5⁵ + 7⁴ + 7⁸ + 1 + 6² + 6⁴ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5771663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73020 + ... + 73098.

It is an arithmetic number, because the mean of its divisors is an integer number (288000).

Almost surely, 2^5771661 is an apocalyptic number.

It is an amenable number.

5771661 is a deficient number, since it is larger than the sum of its proper divisors (3444339).

5771661 is an equidigital number, since it uses as much as digits as its factorization.

5771661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 160 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 5771661 is about 2402.4281466883. The cubic root of 5771661 is about 179.3770751297.

The spelling of 5771661 in words is "five million, seven hundred seventy-one thousand, six hundred sixty-one".