605539997 has 4 divisors (see below), whose sum is σ = 606138780. Its totient is φ = 604941216.

The previous prime is 605539939. The next prime is 605540003. The reversal of 605539997 is 799935506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799935506 = 2 ⋅399967753.

It can be written as a sum of positive squares in 2 ways, for example, as 228947161 + 376592836 = 15131^2 + 19406^2 .

It is a cyclic number.

It is not a de Polignac number, because 605539997 - 2⁶ = 605539933 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 (605539927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297872 + ... + 299897.

It is an arithmetic number, because the mean of its divisors is an integer number (151534695).

Almost surely, 2^605539997 is an apocalyptic number.

It is an amenable number.

605539997 is a deficient number, since it is larger than the sum of its proper divisors (598783).

605539997 is a wasteful number, since it uses less digits than its factorization.

605539997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598782.

The product of its (nonzero) digits is 2296350, while the sum is 53.

The square root of 605539997 is about 24607.7223041874. The cubic root of 605539997 is about 846.0206133539.

The spelling of 605539997 in words is "six hundred five million, five hundred thirty-nine thousand, nine hundred ninety-seven".