513457663 has 4 divisors (see below), whose sum is σ = 513585280. Its totient is φ = 513330048.

The previous prime is 513457631. The next prime is 513457669. The reversal of 513457663 is 366754315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513457663 - 2⁵ = 513457631 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 (513457669) 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, 57570 + ... + 65887.

It is an arithmetic number, because the mean of its divisors is an integer number (128396320).

Almost surely, 2^513457663 is an apocalyptic number.

513457663 is a deficient number, since it is larger than the sum of its proper divisors (127617).

513457663 is a wasteful number, since it uses less digits than its factorization.

513457663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127616.

The product of its digits is 226800, while the sum is 40.

The square root of 513457663 is about 22659.6042110183. The cubic root of 513457663 is about 800.7584801368.

The spelling of 513457663 in words is "five hundred thirteen million, four hundred fifty-seven thousand, six hundred sixty-three".