513660964 has 6 divisors (see below), whose sum is σ = 898906694. Its totient is φ = 256830480.

The previous prime is 513660871. The next prime is 513661007. The reversal of 513660964 is 469066315.

It can be written as a sum of positive squares in only one way, i.e., 351862564 + 161798400 = 18758^2 + 12720^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64207617 + ... + 64207624.

Almost surely, 2^513660964 is an apocalyptic number.

It is an amenable number.

513660964 is a deficient number, since it is larger than the sum of its proper divisors (385245730).

513660964 is a wasteful number, since it uses less digits than its factorization.

513660964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128415245 (or 128415243 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 513660964 is about 22664.0897456748. The cubic root of 513660964 is about 800.8641516330.

The spelling of 513660964 in words is "five hundred thirteen million, six hundred sixty thousand, nine hundred sixty-four".