493506605 has 4 divisors (see below), whose sum is σ = 592207932. Its totient is φ = 394805280.

The previous prime is 493506599. The next prime is 493506619. The reversal of 493506605 is 506605394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506605394 = 2 ⋅253302697.

It can be written as a sum of positive squares in 2 ways, for example, as 168714121 + 324792484 = 12989^2 + 18022^2 .

It is not a de Polignac number, because 493506605 - 2¹² = 493502509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49350656 + ... + 49350665.

It is an arithmetic number, because the mean of its divisors is an integer number (148051983).

Almost surely, 2^493506605 is an apocalyptic number.

It is an amenable number.

493506605 is a deficient number, since it is larger than the sum of its proper divisors (98701327).

493506605 is an equidigital number, since it uses as much as digits as its factorization.

493506605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98701326.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 493506605 is about 22215.0085527780. The cubic root of 493506605 is about 790.2496700583.

It can be divided in two parts, 49350 and 6605, that added together give a palindrome (55955).

The spelling of 493506605 in words is "four hundred ninety-three million, five hundred six thousand, six hundred five".