258744645 has 32 divisors (see below), whose sum is σ = 471219840. Its totient is φ = 134628480.

The previous prime is 258744643. The next prime is 258744649. The reversal of 258744645 is 546447852.

258744645 is a `hidden beast` number, since 2 + 587 + 4 + 4 + 64 + 5 = 666.

It is not a de Polignac number, because 258744645 - 2¹ = 258744643 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 258744645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258744643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17839 + ... + 28908.

It is an arithmetic number, because the mean of its divisors is an integer number (14725620).

Almost surely, 2^258744645 is an apocalyptic number.

It is an amenable number.

258744645 is a deficient number, since it is larger than the sum of its proper divisors (212475195).

258744645 is a wasteful number, since it uses less digits than its factorization.

258744645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46802 (or 46796 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The square root of 258744645 is about 16085.5414891759. The cubic root of 258744645 is about 637.2215531383.

The spelling of 258744645 in words is "two hundred fifty-eight million, seven hundred forty-four thousand, six hundred forty-five".