513706648 has 64 divisors (see below), whose sum is σ = 1247904000. Its totient is φ = 192523392.

The previous prime is 513706639. The next prime is 513706651. The reversal of 513706648 is 846607315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 513706648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4738 + ... + 32401.

It is an arithmetic number, because the mean of its divisors is an integer number (19498500).

Almost surely, 2^513706648 is an apocalyptic number.

It is an amenable number.

513706648 is an abundant number, since it is smaller than the sum of its proper divisors (734197352).

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

513706648 is a wasteful number, since it uses less digits than its factorization.

513706648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37184 (or 37180 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 513706648 is about 22665.0975731410. The cubic root of 513706648 is about 800.8878933588.

The spelling of 513706648 in words is "five hundred thirteen million, seven hundred six thousand, six hundred forty-eight".