4688661 has 4 divisors (see below), whose sum is σ = 6251552. Its totient is φ = 3125772.

The previous prime is 4688653. The next prime is 4688669. The reversal of 4688661 is 1668864.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4688653) and next prime (4688669).

It is not a de Polignac number, because 4688661 - 2³ = 4688653 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4688669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781441 + ... + 781446.

It is an arithmetic number, because the mean of its divisors is an integer number (1562888).

Almost surely, 2^4688661 is an apocalyptic number.

It is an amenable number.

4688661 is a deficient number, since it is larger than the sum of its proper divisors (1562891).

4688661 is a wasteful number, since it uses less digits than its factorization.

4688661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562890.

The product of its digits is 55296, while the sum is 39.

The square root of 4688661 is about 2165.3316143261. The cubic root of 4688661 is about 167.3720534760.

The spelling of 4688661 in words is "four million, six hundred eighty-eight thousand, six hundred sixty-one".