648283545 has 192 divisors, whose sum is σ = 1471841280. Its totient is φ = 256628736.

The previous prime is 648283541. The next prime is 648283547. The reversal of 648283545 is 545382846.

It is not a de Polignac number, because 648283545 - 2² = 648283541 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648283545.

It is not an unprimeable number, because it can be changed into a prime (648283541) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6293964 + ... + 6294066.

It is an arithmetic number, because the mean of its divisors is an integer number (7665840).

Almost surely, 2^648283545 is an apocalyptic number.

648283545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

648283545 is an abundant number, since it is smaller than the sum of its proper divisors (823557735).

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

648283545 is a wasteful number, since it uses less digits than its factorization.

648283545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 648283545 is about 25461.4128633900. The cubic root of 648283545 is about 865.4759406480.

The spelling of 648283545 in words is "six hundred forty-eight million, two hundred eighty-three thousand, five hundred forty-five".