649262870 has 16 divisors (see below), whose sum is σ = 1230182640. Its totient is φ = 246036384.

The previous prime is 649262863. The next prime is 649262899. The reversal of 649262870 is 78262946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708397 + ... + 1708776.

It is an arithmetic number, because the mean of its divisors is an integer number (76886415).

Almost surely, 2^649262870 is an apocalyptic number.

649262870 is a deficient number, since it is larger than the sum of its proper divisors (580919770).

649262870 is a wasteful number, since it uses less digits than its factorization.

649262870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417199.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 649262870 is about 25480.6371584386. The cubic root of 649262870 is about 865.9115297725.

The spelling of 649262870 in words is "six hundred forty-nine million, two hundred sixty-two thousand, eight hundred seventy".