649470750 has 64 divisors (see below), whose sum is σ = 1660696128. Its totient is φ = 168960000.

The previous prime is 649470743. The next prime is 649470751. The reversal of 649470750 is 57074946.

649470750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649470751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20190 + ... + 41310.

It is an arithmetic number, because the mean of its divisors is an integer number (25948377).

Almost surely, 2^649470750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649470750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830348064).

649470750 is an abundant number, since it is smaller than the sum of its proper divisors (1011225378).

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

649470750 is a wasteful number, since it uses less digits than its factorization.

649470750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21182 (or 21172 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 649470750 is about 25484.7160078350. The cubic root of 649470750 is about 866.0039353241.

The spelling of 649470750 in words is "six hundred forty-nine million, four hundred seventy thousand, seven hundred fifty".