258326649 has 12 divisors (see below), whose sum is σ = 426444096. Its totient is φ = 147615192.

The previous prime is 258326623. The next prime is 258326657. The reversal of 258326649 is 946623852.

258326649 is a `hidden beast` number, since 2 + 583 + 2 + 6 + 64 + 9 = 666.

It is not a de Polignac number, because 258326649 - 2¹² = 258322553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258326669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2050149 + ... + 2050274.

It is an arithmetic number, because the mean of its divisors is an integer number (35537008).

Almost surely, 2^258326649 is an apocalyptic number.

It is an amenable number.

258326649 is a deficient number, since it is larger than the sum of its proper divisors (168117447).

258326649 is a wasteful number, since it uses less digits than its factorization.

258326649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100436 (or 4100433 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 258326649 is about 16072.5433270531. The cubic root of 258326649 is about 636.8782292924.

The spelling of 258326649 in words is "two hundred fifty-eight million, three hundred twenty-six thousand, six hundred forty-nine".