605140427 has 4 divisors (see below), whose sum is σ = 605531640. Its totient is φ = 604749216.

The previous prime is 605140421. The next prime is 605140433. The reversal of 605140427 is 724041506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724041506 = 2 ⋅362020753.

It is an interprime number because it is at equal distance from previous prime (605140421) and next prime (605140433).

It is a cyclic number.

It is not a de Polignac number, because 605140427 - 2¹⁶ = 605074891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 605140427.

It is not an unprimeable number, because it can be changed into a prime (605140421) 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, 193277 + ... + 196382.

It is an arithmetic number, because the mean of its divisors is an integer number (151382910).

Almost surely, 2^605140427 is an apocalyptic number.

605140427 is a deficient number, since it is larger than the sum of its proper divisors (391213).

605140427 is a wasteful number, since it uses less digits than its factorization.

605140427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391212.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 605140427 is about 24599.6021715799. The cubic root of 605140427 is about 845.8344881108.

The spelling of 605140427 in words is "six hundred five million, one hundred forty thousand, four hundred twenty-seven".