649196273 has 8 divisors (see below), whose sum is σ = 709832640. Its totient is φ = 588829680.

The previous prime is 649196269. The next prime is 649196279. The reversal of 649196273 is 372691946.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 649196273 - 2² = 649196269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649196279) 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, 62390 + ... + 72047.

It is an arithmetic number, because the mean of its divisors is an integer number (88729080).

Almost surely, 2^649196273 is an apocalyptic number.

It is an amenable number.

649196273 is a deficient number, since it is larger than the sum of its proper divisors (60636367).

649196273 is a wasteful number, since it uses less digits than its factorization.

649196273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134887.

The product of its digits is 489888, while the sum is 47.

The square root of 649196273 is about 25479.3303090956. The cubic root of 649196273 is about 865.8819223081.

The spelling of 649196273 in words is "six hundred forty-nine million, one hundred ninety-six thousand, two hundred seventy-three".