648432700 has 72 divisors (see below), whose sum is σ = 1512371952. Its totient is φ = 240430080.

The previous prime is 648432677. The next prime is 648432731. The reversal of 648432700 is 7234846.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 111054 + ... + 116746.

It is an arithmetic number, because the mean of its divisors is an integer number (21005166).

Almost surely, 2^648432700 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 648432700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756185976).

648432700 is an abundant number, since it is smaller than the sum of its proper divisors (863939252).

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

648432700 is a wasteful number, since it uses less digits than its factorization.

648432700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791 (or 5784 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 648432700 is about 25464.3417350616. The cubic root of 648432700 is about 865.5423108683.

The spelling of 648432700 in words is "six hundred forty-eight million, four hundred thirty-two thousand, seven hundred".