513698556 has 72 divisors (see below), whose sum is σ = 1398249216. Its totient is φ = 146358240.

The previous prime is 513698533. The next prime is 513698557. The reversal of 513698556 is 655896315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513698557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252415 + ... + 254441.

It is an arithmetic number, because the mean of its divisors is an integer number (19420128).

Almost surely, 2^513698556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 513698556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699124608).

513698556 is an abundant number, since it is smaller than the sum of its proper divisors (884550660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513698556 is a wasteful number, since it uses less digits than its factorization.

513698556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2470 counting only the distinct ones).

The product of its digits is 972000, while the sum is 48.

The square root of 513698556 is about 22664.9190600805. The cubic root of 513698556 is about 800.8836880931.

The spelling of 513698556 in words is "five hundred thirteen million, six hundred ninety-eight thousand, five hundred fifty-six".