258720067 has 4 divisors (see below), whose sum is σ = 258876936. Its totient is φ = 258563200.

The previous prime is 258720041. The next prime is 258720071. The reversal of 258720067 is 760027852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258720067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258720367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75934 + ... + 79267.

It is an arithmetic number, because the mean of its divisors is an integer number (64719234).

Almost surely, 2^258720067 is an apocalyptic number.

258720067 is a deficient number, since it is larger than the sum of its proper divisors (156869).

258720067 is a wasteful number, since it uses less digits than its factorization.

258720067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156868.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 258720067 is about 16084.7774930212. Note that the first 3 decimals coincide. The cubic root of 258720067 is about 637.2013760673.

The spelling of 258720067 in words is "two hundred fifty-eight million, seven hundred twenty thousand, sixty-seven".