4247661 has 8 divisors (see below), whose sum is σ = 6178464. Its totient is φ = 2574320.

The previous prime is 4247629. The next prime is 4247687. The reversal of 4247661 is 1667424.

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

It is a cyclic number.

It is not a de Polignac number, because 4247661 - 2⁵ = 4247629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64326 + ... + 64391.

It is an arithmetic number, because the mean of its divisors is an integer number (772308).

Almost surely, 2^4247661 is an apocalyptic number.

It is an amenable number.

4247661 is a deficient number, since it is larger than the sum of its proper divisors (1930803).

4247661 is a wasteful number, since it uses less digits than its factorization.

4247661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128731.

The product of its digits is 8064, while the sum is 30.

The square root of 4247661 is about 2060.9854439078. The cubic root of 4247661 is about 161.9508691128.

The spelling of 4247661 in words is "four million, two hundred forty-seven thousand, six hundred sixty-one".