258640115 has 8 divisors (see below), whose sum is σ = 310748400. Its totient is φ = 206658592.

The previous prime is 258640111. The next prime is 258640127. The reversal of 258640115 is 511046852.

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

It is a cyclic number.

It is not a de Polignac number, because 258640115 - 2² = 258640111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258640111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27140 + ... + 35409.

It is an arithmetic number, because the mean of its divisors is an integer number (38843550).

Almost surely, 2^258640115 is an apocalyptic number.

258640115 is a deficient number, since it is larger than the sum of its proper divisors (52108285).

258640115 is an equidigital number, since it uses as much as digits as its factorization.

258640115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63381.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 258640115 is about 16082.2919697411. The cubic root of 258640115 is about 637.1357314064.

Adding to 258640115 its reverse (511046852), we get a palindrome (769686967).

The spelling of 258640115 in words is "two hundred fifty-eight million, six hundred forty thousand, one hundred fifteen".