649144017 has 32 divisors (see below), whose sum is σ = 979488000. Its totient is φ = 424828800.

The previous prime is 649144009. The next prime is 649144043. The reversal of 649144017 is 710441946.

649144017 is a `hidden beast` number, since 649 + 1 + 4 + 4 + 0 + 1 + 7 = 666.

It is not a de Polignac number, because 649144017 - 2³ = 649144009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649144417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361959 + ... + 363747.

It is an arithmetic number, because the mean of its divisors is an integer number (30609000).

Almost surely, 2^649144017 is an apocalyptic number.

It is an amenable number.

649144017 is a deficient number, since it is larger than the sum of its proper divisors (330343983).

649144017 is a wasteful number, since it uses less digits than its factorization.

649144017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 649144017 is about 25478.3048297959. The cubic root of 649144017 is about 865.8586890982.

The spelling of 649144017 in words is "six hundred forty-nine million, one hundred forty-four thousand, seventeen".