647143145 has 8 divisors (see below), whose sum is σ = 847169280. Its totient is φ = 470649520.

The previous prime is 647143117. The next prime is 647143153. The reversal of 647143145 is 541341746.

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

It is not a de Polignac number, because 647143145 - 2²² = 642948841 is a prime.

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, 5883065 + ... + 5883174.

It is an arithmetic number, because the mean of its divisors is an integer number (105896160).

Almost surely, 2^647143145 is an apocalyptic number.

It is an amenable number.

647143145 is a deficient number, since it is larger than the sum of its proper divisors (200026135).

647143145 is a wasteful number, since it uses less digits than its factorization.

647143145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11766255.

The product of its digits is 40320, while the sum is 35.

The square root of 647143145 is about 25439.0083336595. The cubic root of 647143145 is about 864.9681545740.

The spelling of 647143145 in words is "six hundred forty-seven million, one hundred forty-three thousand, one hundred forty-five".