649024143 has 8 divisors (see below), whose sum is σ = 902990208. Its totient is φ = 413870424.

The previous prime is 649024139. The next prime is 649024157. The reversal of 649024143 is 341420946.

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

It is not a de Polignac number, because 649024143 - 2² = 649024139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649024163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4703005 + ... + 4703142.

It is an arithmetic number, because the mean of its divisors is an integer number (112873776).

Almost surely, 2^649024143 is an apocalyptic number.

649024143 is a deficient number, since it is larger than the sum of its proper divisors (253966065).

649024143 is a wasteful number, since it uses less digits than its factorization.

649024143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9406173.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 649024143 is about 25475.9522491309. The cubic root of 649024143 is about 865.8053879655.

The spelling of 649024143 in words is "six hundred forty-nine million, twenty-four thousand, one hundred forty-three".