513856660 has 24 divisors (see below), whose sum is σ = 1080868320. Its totient is φ = 205205664.

The previous prime is 513856657. The next prime is 513856663. The reversal of 513856660 is 66658315.

It is an interprime number because it is at equal distance from previous prime (513856657) and next prime (513856663).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513856663) 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, 8374 + ... + 33133.

It is an arithmetic number, because the mean of its divisors is an integer number (45036180).

Almost surely, 2^513856660 is an apocalyptic number.

It is an amenable number.

513856660 is an abundant number, since it is smaller than the sum of its proper divisors (567011660).

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

513856660 is a wasteful number, since it uses less digits than its factorization.

513856660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42135 (or 42133 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 513856660 is about 22668.4066489023. The cubic root of 513856660 is about 800.9658438794.

The spelling of 513856660 in words is "five hundred thirteen million, eight hundred fifty-six thousand, six hundred sixty".