648538337 has 8 divisors (see below), whose sum is σ = 682946880. Its totient is φ = 614647440.

The previous prime is 648538333. The next prime is 648538349. The reversal of 648538337 is 733835846.

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 648538337 - 2² = 648538333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648538291 and 648538300.

It is not an unprimeable number, because it can be changed into a prime (648538333) 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, 126839 + ... + 131852.

It is an arithmetic number, because the mean of its divisors is an integer number (85368360).

Almost surely, 2^648538337 is an apocalyptic number.

It is an amenable number.

648538337 is a deficient number, since it is larger than the sum of its proper divisors (34408543).

648538337 is a wasteful number, since it uses less digits than its factorization.

648538337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258823.

The product of its digits is 1451520, while the sum is 47.

The square root of 648538337 is about 25466.4158648209. The cubic root of 648538337 is about 865.5893105175.

The spelling of 648538337 in words is "six hundred forty-eight million, five hundred thirty-eight thousand, three hundred thirty-seven".