659848945 has 12 divisors (see below), whose sum is σ = 921095604. Its totient is φ = 452467680.

The previous prime is 659848927. The next prime is 659848951. The reversal of 659848945 is 549848956.

It can be written as a sum of positive squares in 2 ways, for example, as 340476304 + 319372641 = 18452^2 + 17871^2 .

It is not a de Polignac number, because 659848945 - 2⁵ = 659848913 is a prime.

It is a super-2 number, since 2×659848945² = 870801260435226050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 659848945.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1346386 + ... + 1346875.

It is an arithmetic number, because the mean of its divisors is an integer number (76757967).

Almost surely, 2^659848945 is an apocalyptic number.

It is an amenable number.

659848945 is a deficient number, since it is larger than the sum of its proper divisors (261246659).

659848945 is a wasteful number, since it uses less digits than its factorization.

659848945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693280 (or 2693273 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 58.

The square root of 659848945 is about 25687.5250851459. The cubic root of 659848945 is about 870.5923411400.

The spelling of 659848945 in words is "six hundred fifty-nine million, eight hundred forty-eight thousand, nine hundred forty-five".