258601648 has 20 divisors (see below), whose sum is σ = 501535360. Its totient is φ = 129173184.

The previous prime is 258601643. The next prime is 258601649. The reversal of 258601648 is 846106852.

It is a self number, because there is not a number n which added to its sum of digits gives 258601648.

It is not an unprimeable number, because it can be changed into a prime (258601643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9958 + ... + 24826.

It is an arithmetic number, because the mean of its divisors is an integer number (25076768).

Almost surely, 2^258601648 is an apocalyptic number.

It is an amenable number.

258601648 is a deficient number, since it is larger than the sum of its proper divisors (242933712).

258601648 is a wasteful number, since it uses less digits than its factorization.

258601648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964 (or 15958 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 258601648 is about 16081.0959825504. The cubic root of 258601648 is about 637.1041432215.

The spelling of 258601648 in words is "two hundred fifty-eight million, six hundred one thousand, six hundred forty-eight".