649962273 has 8 divisors (see below), whose sum is σ = 869701536. Its totient is φ = 431765600.

The previous prime is 649962253. The next prime is 649962301. The reversal of 649962273 is 372269946.

649962273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 649962273 - 2²⁶ = 582853409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (649962233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384663 + ... + 386348.

It is an arithmetic number, because the mean of its divisors is an integer number (108712692).

Almost surely, 2^649962273 is an apocalyptic number.

It is an amenable number.

649962273 is a deficient number, since it is larger than the sum of its proper divisors (219739263).

649962273 is a wasteful number, since it uses less digits than its factorization.

649962273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771295.

The product of its digits is 979776, while the sum is 48.

The square root of 649962273 is about 25494.3576698845. The cubic root of 649962273 is about 866.2223457332. Note that the first 3 decimals are identical.

The spelling of 649962273 in words is "six hundred forty-nine million, nine hundred sixty-two thousand, two hundred seventy-three".