258764427 has 6 divisors (see below), whose sum is σ = 373770852. Its totient is φ = 172509612.

The previous prime is 258764377. The next prime is 258764437. The reversal of 258764427 is 724467852.

It is a happy number.

258764427 is a `hidden beast` number, since 2 + 587 + 6 + 44 + 27 = 666.

It is not a de Polignac number, because 258764427 - 2¹¹ = 258762379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258764437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14375793 + ... + 14375810.

It is an arithmetic number, because the mean of its divisors is an integer number (62295142).

Almost surely, 2^258764427 is an apocalyptic number.

258764427 is a deficient number, since it is larger than the sum of its proper divisors (115006425).

258764427 is a wasteful number, since it uses less digits than its factorization.

258764427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28751609 (or 28751606 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 258764427 is about 16086.1563774570. The cubic root of 258764427 is about 637.2377920516.

It can be divided in two parts, 25876 and 4427, that added together give a palindrome (30303).

The spelling of 258764427 in words is "two hundred fifty-eight million, seven hundred sixty-four thousand, four hundred twenty-seven".