601606665 has 24 divisors (see below), whose sum is σ = 1137584448. Its totient is φ = 291687840.

The previous prime is 601606661. The next prime is 601606667. The reversal of 601606665 is 566606106.

601606665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 601606665 - 2² = 601606661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (601606661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 607189 + ... + 608178.

It is an arithmetic number, because the mean of its divisors is an integer number (47399352).

Almost surely, 2^601606665 is an apocalyptic number.

It is an amenable number.

601606665 is a deficient number, since it is larger than the sum of its proper divisors (535977783).

601606665 is a wasteful number, since it uses less digits than its factorization.

601606665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215389 (or 1215386 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 601606665 is about 24527.6714141396. The cubic root of 601606665 is about 844.1848352885.

The spelling of 601606665 in words is "six hundred one million, six hundred six thousand, six hundred sixty-five".