649573088 has 96 divisors (see below), whose sum is σ = 1381484160. Its totient is φ = 300052480.

The previous prime is 649573087. The next prime is 649573091. The reversal of 649573088 is 880375946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649573087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2311508 + ... + 2311788.

It is an arithmetic number, because the mean of its divisors is an integer number (14390460).

Almost surely, 2^649573088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649573088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690742080).

649573088 is an abundant number, since it is smaller than the sum of its proper divisors (731911072).

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

649573088 is a wasteful number, since it uses less digits than its factorization.

649573088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 649573088 is about 25486.7237596361. The cubic root of 649573088 is about 866.0494187459.

The spelling of 649573088 in words is "six hundred forty-nine million, five hundred seventy-three thousand, eighty-eight".