649984748 has 12 divisors (see below), whose sum is σ = 1299969552. Its totient is φ = 278564880.

The previous prime is 649984747. The next prime is 649984771. The reversal of 649984748 is 847489946.

649984748 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (649984747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11606843 + ... + 11606898.

It is an arithmetic number, because the mean of its divisors is an integer number (108330796).

Almost surely, 2^649984748 is an apocalyptic number.

It is an amenable number.

649984748 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649984748 is a wasteful number, since it uses less digits than its factorization.

649984748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23213752 (or 23213750 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 59.

The square root of 649984748 is about 25494.7984498799. The cubic root of 649984748 is about 866.2323299654.

The spelling of 649984748 in words is "six hundred forty-nine million, nine hundred eighty-four thousand, seven hundred forty-eight".