605313257 has 4 divisors (see below), whose sum is σ = 605370000. Its totient is φ = 605256516.

The previous prime is 605313253. The next prime is 605313307. The reversal of 605313257 is 752313506.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 605313257 - 2² = 605313253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605313253) 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, 7007 + ... + 35492.

It is an arithmetic number, because the mean of its divisors is an integer number (151342500).

Almost surely, 2^605313257 is an apocalyptic number.

It is an amenable number.

605313257 is a deficient number, since it is larger than the sum of its proper divisors (56743).

605313257 is a wasteful number, since it uses less digits than its factorization.

605313257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56742.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 605313257 is about 24603.1147824823. The cubic root of 605313257 is about 845.9150047717.

The spelling of 605313257 in words is "six hundred five million, three hundred thirteen thousand, two hundred fifty-seven".