512768805 has 16 divisors (see below), whose sum is σ = 820874304. Its totient is φ = 273328640.

The previous prime is 512768797. The next prime is 512768821. The reversal of 512768805 is 508867215.

It is not a de Polignac number, because 512768805 - 2³ = 512768797 is a prime.

It is a super-2 number, since 2×512768805² = 525863694762256050, which contains 22 as substring.

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, 23002 + ... + 39428.

It is an arithmetic number, because the mean of its divisors is an integer number (51304644).

Almost surely, 2^512768805 is an apocalyptic number.

It is an amenable number.

512768805 is a deficient number, since it is larger than the sum of its proper divisors (308105499).

512768805 is a wasteful number, since it uses less digits than its factorization.

512768805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18516.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 512768805 is about 22644.3989763473. The cubic root of 512768805 is about 800.4002190184.

The spelling of 512768805 in words is "five hundred twelve million, seven hundred sixty-eight thousand, eight hundred five".