513150665 has 8 divisors (see below), whose sum is σ = 615944328. Its totient is φ = 410411520.

The previous prime is 513150643. The next prime is 513150683. The reversal of 513150665 is 566051315.

It can be written as a sum of positive squares in 4 ways, for example, as 46936201 + 466214464 = 6851^2 + 21592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513150665 - 2⁶ = 513150601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11195 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (76993041).

Almost surely, 2^513150665 is an apocalyptic number.

It is an amenable number.

513150665 is a deficient number, since it is larger than the sum of its proper divisors (102793663).

513150665 is a wasteful number, since it uses less digits than its factorization.

513150665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27259.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 513150665 is about 22652.8290727670. The cubic root of 513150665 is about 800.5988562896.

It can be divided in two parts, 513150 and 665, that multiplied together give a triangular number (341244750 = T₂₆₁₂₄).

The spelling of 513150665 in words is "five hundred thirteen million, one hundred fifty thousand, six hundred sixty-five".