513063681 has 16 divisors (see below), whose sum is σ = 737136960. Its totient is φ = 315547200.

The previous prime is 513063667. The next prime is 513063697. The reversal of 513063681 is 186360315.

It is not a de Polignac number, because 513063681 - 2¹⁰ = 513062657 is a prime.

It is a super-2 number, since 2×513063681² = 526468681522539522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513063601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98031 + ... + 103131.

It is an arithmetic number, because the mean of its divisors is an integer number (46071060).

Almost surely, 2^513063681 is an apocalyptic number.

It is an amenable number.

513063681 is a deficient number, since it is larger than the sum of its proper divisors (224073279).

513063681 is a wasteful number, since it uses less digits than its factorization.

513063681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 513063681 is about 22650.9090546053. The cubic root of 513063681 is about 800.5536173173.

The spelling of 513063681 in words is "five hundred thirteen million, sixty-three thousand, six hundred eighty-one".