512801647 has 4 divisors (see below), whose sum is σ = 514694176. Its totient is φ = 510909120.

The previous prime is 512801599. The next prime is 512801683. The reversal of 512801647 is 746108215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512801647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512801147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945858 + ... + 946399.

It is an arithmetic number, because the mean of its divisors is an integer number (128673544).

Almost surely, 2^512801647 is an apocalyptic number.

512801647 is a deficient number, since it is larger than the sum of its proper divisors (1892529).

512801647 is a wasteful number, since it uses less digits than its factorization.

512801647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892528.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 512801647 is about 22645.1241330225. The cubic root of 512801647 is about 800.4173067602.

The spelling of 512801647 in words is "five hundred twelve million, eight hundred one thousand, six hundred forty-seven".