4420689661 has 8 divisors (see below), whose sum is σ = 4442278464. Its totient is φ = 4399123680.

The previous prime is 4420689641. The next prime is 4420689671. The reversal of 4420689661 is 1669860244.

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 4420689661 - 2⁹ = 4420689149 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 (4420689601) 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, 481726 + ... + 490816.

It is an arithmetic number, because the mean of its divisors is an integer number (555284808).

Almost surely, 2^4420689661 is an apocalyptic number.

It is an amenable number.

4420689661 is a deficient number, since it is larger than the sum of its proper divisors (21588803).

4420689661 is a wasteful number, since it uses less digits than its factorization.

4420689661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11411.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 4420689661 is about 66488.2670927736. The cubic root of 4420689661 is about 1641.2069319296.

The spelling of 4420689661 in words is "four billion, four hundred twenty million, six hundred eighty-nine thousand, six hundred sixty-one".