648750740 has 48 divisors (see below), whose sum is σ = 1514298240. Its totient is φ = 231454080.

The previous prime is 648750731. The next prime is 648750743. The reversal of 648750740 is 47057846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648750743) 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, 16160 + ... + 39479.

It is an arithmetic number, because the mean of its divisors is an integer number (31547880).

Almost surely, 2^648750740 is an apocalyptic number.

It is an amenable number.

648750740 is an abundant number, since it is smaller than the sum of its proper divisors (865547500).

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

648750740 is a wasteful number, since it uses less digits than its factorization.

648750740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55712 (or 55710 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 648750740 is about 25470.5857804645. The cubic root of 648750740 is about 865.6837966813.

The spelling of 648750740 in words is "six hundred forty-eight million, seven hundred fifty thousand, seven hundred forty".