648398333 has 8 divisors (see below), whose sum is σ = 723794016. Its totient is φ = 575744400.

The previous prime is 648398321. The next prime is 648398339. The reversal of 648398333 is 333893846.

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

It is not a de Polignac number, because 648398333 - 2¹² = 648394237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648398339) 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, 684938 + ... + 685883.

It is an arithmetic number, because the mean of its divisors is an integer number (90474252).

Almost surely, 2^648398333 is an apocalyptic number.

It is an amenable number.

648398333 is a deficient number, since it is larger than the sum of its proper divisors (75395683).

648398333 is a wasteful number, since it uses less digits than its factorization.

648398333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370875.

The product of its digits is 1119744, while the sum is 47.

The square root of 648398333 is about 25463.6669197506. Note that the first 3 decimals coincide. The cubic root of 648398333 is about 865.5270193208.

The spelling of 648398333 in words is "six hundred forty-eight million, three hundred ninety-eight thousand, three hundred thirty-three".