495688321 has 4 divisors (see below), whose sum is σ = 521777200. Its totient is φ = 469599444.

The previous prime is 495688253. The next prime is 495688327. The reversal of 495688321 is 123886594.

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.

It is a cyclic number.

It is not a de Polignac number, because 495688321 - 2¹¹ = 495686273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495688327) 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, 13044411 + ... + 13044448.

It is an arithmetic number, because the mean of its divisors is an integer number (130444300).

Almost surely, 2^495688321 is an apocalyptic number.

It is an amenable number.

495688321 is a deficient number, since it is larger than the sum of its proper divisors (26088879).

495688321 is a wasteful number, since it uses less digits than its factorization.

495688321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26088878.

The product of its digits is 414720, while the sum is 46.

The square root of 495688321 is about 22264.0589515928. The cubic root of 495688321 is about 791.4124818582.

The spelling of 495688321 in words is "four hundred ninety-five million, six hundred eighty-eight thousand, three hundred twenty-one".