4771661 has 4 divisors (see below), whose sum is σ = 4788924. Its totient is φ = 4754400.

The previous prime is 4771633. The next prime is 4771687. The reversal of 4771661 is 1661774.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1661774 = 2 ⋅830887.

It can be written as a sum of positive squares in 2 ways, for example, as 4141225 + 630436 = 2035^2 + 794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4771661 is a prime.

It is a super-3 number, since 3×4771661³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4779661) 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, 8210 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (1197231).

Almost surely, 2^4771661 is an apocalyptic number.

It is an amenable number.

4771661 is a deficient number, since it is larger than the sum of its proper divisors (17263).

4771661 is a wasteful number, since it uses less digits than its factorization.

4771661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17262.

The product of its digits is 7056, while the sum is 32.

The square root of 4771661 is about 2184.4131935145. The cubic root of 4771661 is about 168.3539048370.

It can be divided in two parts, 477 and 1661, that multiplied together give a palindrome (792297).

The spelling of 4771661 in words is "four million, seven hundred seventy-one thousand, six hundred sixty-one".