649662853 has 16 divisors (see below), whose sum is σ = 779913216. Its totient is φ = 529095600.

The previous prime is 649662823. The next prime is 649662859. The reversal of 649662853 is 358266946.

It is a cyclic number.

It is not a de Polignac number, because 649662853 - 2¹³ = 649654661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649662797 and 649662806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649662859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10950 + ... + 37672.

It is an arithmetic number, because the mean of its divisors is an integer number (48744576).

Almost surely, 2^649662853 is an apocalyptic number.

It is an amenable number.

649662853 is a deficient number, since it is larger than the sum of its proper divisors (130250363).

649662853 is a wasteful number, since it uses less digits than its factorization.

649662853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26904.

The product of its digits is 1866240, while the sum is 49.

The square root of 649662853 is about 25488.4847136898. The cubic root of 649662853 is about 866.0893102514.

The spelling of 649662853 in words is "six hundred forty-nine million, six hundred sixty-two thousand, eight hundred fifty-three".