649949702 has 4 divisors (see below), whose sum is σ = 974924556. Its totient is φ = 324974850.

The previous prime is 649949681. The next prime is 649949731. The reversal of 649949702 is 207949946.

649949702 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162487424 + ... + 162487427.

It is an arithmetic number, because the mean of its divisors is an integer number (243731139).

Almost surely, 2^649949702 is an apocalyptic number.

649949702 is a deficient number, since it is larger than the sum of its proper divisors (324974854).

649949702 is a wasteful number, since it uses less digits than its factorization.

649949702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324974853.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 649949702 is about 25494.1111239439. Note that the first 4 decimals coincide. The cubic root of 649949702 is about 866.2167611263.

The spelling of 649949702 in words is "six hundred forty-nine million, nine hundred forty-nine thousand, seven hundred two".