646113577 has 8 divisors (see below), whose sum is σ = 684411552. Its totient is φ = 607848000.

The previous prime is 646113569. The next prime is 646113607. The reversal of 646113577 is 775311646.

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 646113577 - 2³ = 646113569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646413577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41802 + ... + 55132.

It is an arithmetic number, because the mean of its divisors is an integer number (85551444).

Almost surely, 2^646113577 is an apocalyptic number.

It is an amenable number.

646113577 is a deficient number, since it is larger than the sum of its proper divisors (38297975).

646113577 is a wasteful number, since it uses less digits than its factorization.

646113577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16199.

The product of its digits is 105840, while the sum is 40.

The square root of 646113577 is about 25418.7642697280. The cubic root of 646113577 is about 864.5092060267.

The spelling of 646113577 in words is "six hundred forty-six million, one hundred thirteen thousand, five hundred seventy-seven".