2401666065 has 16 divisors (see below), whose sum is σ = 4269628800. Its totient is φ = 1280888496.

The previous prime is 2401666051. The next prime is 2401666067. The reversal of 2401666065 is 5606661042.

It is a happy number.

It is not a de Polignac number, because 2401666065 - 2¹¹ = 2401664017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2401666067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8894925 + ... + 8895194.

It is an arithmetic number, because the mean of its divisors is an integer number (266851800).

Almost surely, 2^2401666065 is an apocalyptic number.

It is an amenable number.

2401666065 is a deficient number, since it is larger than the sum of its proper divisors (1867962735).

2401666065 is a wasteful number, since it uses less digits than its factorization.

2401666065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17790133 (or 17790127 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2401666065 is about 49006.7961103356. The cubic root of 2401666065 is about 1339.1756392824.

The spelling of 2401666065 in words is "two billion, four hundred one million, six hundred sixty-six thousand, sixty-five".