649423600 has 120 divisors (see below), whose sum is σ = 1826945568. Its totient is φ = 217190400.

The previous prime is 649423583. The next prime is 649423627. The reversal of 649423600 is 6324946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111972 + ... + 117628.

Almost surely, 2^649423600 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 649423600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913472784).

649423600 is an abundant number, since it is smaller than the sum of its proper divisors (1177521968).

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

649423600 is a wasteful number, since it uses less digits than its factorization.

649423600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5712 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 649423600 is about 25483.7909267832. The cubic root of 649423600 is about 865.9829782224.

The spelling of 649423600 in words is "six hundred forty-nine million, four hundred twenty-three thousand, six hundred".