649853403 has 32 divisors (see below), whose sum is σ = 923940864. Its totient is φ = 405600000.

The previous prime is 649853401. The next prime is 649853411. The reversal of 649853403 is 304358946.

It is not a de Polignac number, because 649853403 - 2¹ = 649853401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649853401) 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, 498853 + ... + 500153.

It is an arithmetic number, because the mean of its divisors is an integer number (28873152).

Almost surely, 2^649853403 is an apocalyptic number.

649853403 is a deficient number, since it is larger than the sum of its proper divisors (274087461).

649853403 is a wasteful number, since it uses less digits than its factorization.

649853403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 649853403 is about 25492.2224021367. Note that the first 3 decimals coincide. The cubic root of 649853403 is about 866.1739783655.

The spelling of 649853403 in words is "six hundred forty-nine million, eight hundred fifty-three thousand, four hundred three".