645160248 has 64 divisors (see below), whose sum is σ = 1795852800. Its totient is φ = 214604640.

The previous prime is 645160247. The next prime is 645160253. The reversal of 645160248 is 842061546.

645160248 is a `hidden beast` number, since 6 + 4 + 5 + 1 + 602 + 48 = 666.

645160248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645160247) 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, 110113 + ... + 115823.

It is an arithmetic number, because the mean of its divisors is an integer number (28060200).

Almost surely, 2^645160248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 645160248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897926400).

645160248 is an abundant number, since it is smaller than the sum of its proper divisors (1150692552).

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

645160248 is a wasteful number, since it uses less digits than its factorization.

645160248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249 (or 6239 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 645160248 is about 25400.0048818893. The cubic root of 645160248 is about 864.0838074569.

The spelling of 645160248 in words is "six hundred forty-five million, one hundred sixty thousand, two hundred forty-eight".