649949703 has 8 divisors (see below), whose sum is σ = 933261168. Its totient is φ = 399969024.

The previous prime is 649949681. The next prime is 649949731. The reversal of 649949703 is 307949946.

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

It is not a de Polignac number, because 649949703 - 2⁶ = 649949639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649949603) 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, 8332650 + ... + 8332727.

It is an arithmetic number, because the mean of its divisors is an integer number (116657646).

Almost surely, 2^649949703 is an apocalyptic number.

649949703 is a deficient number, since it is larger than the sum of its proper divisors (283311465).

649949703 is a wasteful number, since it uses less digits than its factorization.

649949703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16665393.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 649949703 is about 25494.1111435563. Note that the first 4 decimals coincide. The cubic root of 649949703 is about 866.2167615706.

The spelling of 649949703 in words is "six hundred forty-nine million, nine hundred forty-nine thousand, seven hundred three".