646313341 has 8 divisors (see below), whose sum is σ = 651975480. Its totient is φ = 640676352.

The previous prime is 646313333. The next prime is 646313347. The reversal of 646313341 is 143313646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 95472441 + 550840900 = 9771^2 + 23470^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 646313341 - 2³ = 646313333 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 (646313347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47301 + ... + 59413.

It is an arithmetic number, because the mean of its divisors is an integer number (81496935).

Almost surely, 2^646313341 is an apocalyptic number.

It is an amenable number.

646313341 is a deficient number, since it is larger than the sum of its proper divisors (5662139).

646313341 is a wasteful number, since it uses less digits than its factorization.

646313341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12575.

The product of its digits is 15552, while the sum is 31.

The square root of 646313341 is about 25422.6934253631. The cubic root of 646313341 is about 864.5982925424.

Adding to 646313341 its reverse (143313646), we get a palindrome (789626987).

The spelling of 646313341 in words is "six hundred forty-six million, three hundred thirteen thousand, three hundred forty-one".