648370447 has 8 divisors (see below), whose sum is σ = 653815296. Its totient is φ = 642936192.

The previous prime is 648370441. The next prime is 648370501. The reversal of 648370447 is 744073846.

648370447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648370447 - 2³ = 648370439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648370441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161458 + ... + 165424.

It is an arithmetic number, because the mean of its divisors is an integer number (81726912).

Almost surely, 2^648370447 is an apocalyptic number.

648370447 is a deficient number, since it is larger than the sum of its proper divisors (5444849).

648370447 is a wasteful number, since it uses less digits than its factorization.

648370447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297.

The product of its (nonzero) digits is 451584, while the sum is 43.

The square root of 648370447 is about 25463.1193493649. The cubic root of 648370447 is about 865.5146110880.

The spelling of 648370447 in words is "six hundred forty-eight million, three hundred seventy thousand, four hundred forty-seven".