4777661 has 8 divisors (see below), whose sum is σ = 5537664. Its totient is φ = 4037040.

The previous prime is 4777621. The next prime is 4777679. The reversal of 4777661 is 1667774.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4777661 - 2¹⁰ = 4776637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4777621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4310 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (692208).

Almost surely, 2^4777661 is an apocalyptic number.

It is an amenable number.

4777661 is a deficient number, since it is larger than the sum of its proper divisors (760003).

4777661 is an equidigital number, since it uses as much as digits as its factorization.

4777661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9691.

The product of its digits is 49392, while the sum is 38.

The square root of 4777661 is about 2185.7861286045. The cubic root of 4777661 is about 168.4244393490.

The spelling of 4777661 in words is "four million, seven hundred seventy-seven thousand, six hundred sixty-one".