258970987 has 8 divisors (see below), whose sum is σ = 288525312. Its totient is φ = 230418600.

The previous prime is 258970967. The next prime is 258970991. The reversal of 258970987 is 789079852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258970987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258970937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249939 + ... + 250972.

It is an arithmetic number, because the mean of its divisors is an integer number (36065664).

Almost surely, 2^258970987 is an apocalyptic number.

258970987 is a deficient number, since it is larger than the sum of its proper divisors (29554325).

258970987 is a wasteful number, since it uses less digits than its factorization.

258970987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500969.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The square root of 258970987 is about 16092.5755241353. The cubic root of 258970987 is about 637.4073063742.

The spelling of 258970987 in words is "two hundred fifty-eight million, nine hundred seventy thousand, nine hundred eighty-seven".