4671661 has 4 divisors (see below), whose sum is σ = 4685472. Its totient is φ = 4657852.

The previous prime is 4671647. The next prime is 4671671. The reversal of 4671661 is 1661764.

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 a cyclic number.

It is not a de Polignac number, because 4671661 - 2¹⁷ = 4540589 is a prime.

It is a super-3 number, since 3×4671661³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

4671661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4671671) 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, 6385 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (1171368).

Almost surely, 2^4671661 is an apocalyptic number.

It is an amenable number.

4671661 is a deficient number, since it is larger than the sum of its proper divisors (13811).

4671661 is a wasteful number, since it uses less digits than its factorization.

4671661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13810.

The product of its digits is 6048, while the sum is 31.

The square root of 4671661 is about 2161.4025538987. The cubic root of 4671661 is about 167.1695243899.

The spelling of 4671661 in words is "four million, six hundred seventy-one thousand, six hundred sixty-one".