258870995 has 4 divisors (see below), whose sum is σ = 310645200. Its totient is φ = 207096792.

The previous prime is 258870977. The next prime is 258871013. The reversal of 258870995 is 599078852.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (258870977) and next prime (258871013).

It is a cyclic number.

It is not a de Polignac number, because 258870995 - 2¹² = 258866899 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25887095 + ... + 25887104.

It is an arithmetic number, because the mean of its divisors is an integer number (77661300).

Almost surely, 2^258870995 is an apocalyptic number.

258870995 is a deficient number, since it is larger than the sum of its proper divisors (51774205).

258870995 is an equidigital number, since it uses as much as digits as its factorization.

258870995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51774204.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The square root of 258870995 is about 16089.4684498898. The cubic root of 258870995 is about 637.3252587841.

The spelling of 258870995 in words is "two hundred fifty-eight million, eight hundred seventy thousand, nine hundred ninety-five".