649516600 has 48 divisors (see below), whose sum is σ = 1514412000. Its totient is φ = 259069440.

The previous prime is 649516561. The next prime is 649516627. The reversal of 649516600 is 6615946.

It is a self number, because there is not a number n which added to its sum of digits gives 649516600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68976 + ... + 77824.

It is an arithmetic number, because the mean of its divisors is an integer number (31550250).

Almost surely, 2^649516600 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 649516600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757206000).

649516600 is an abundant number, since it is smaller than the sum of its proper divisors (864895400).

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

649516600 is a wasteful number, since it uses less digits than its factorization.

649516600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232 (or 9223 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 649516600 is about 25485.6155507376. The cubic root of 649516600 is about 866.0243136327.

The spelling of 649516600 in words is "six hundred forty-nine million, five hundred sixteen thousand, six hundred".