258766965 has 12 divisors (see below), whose sum is σ = 448529484. Its totient is φ = 138009024.

The previous prime is 258766961. The next prime is 258766967. The reversal of 258766965 is 569667852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 91814724 + 166952241 = 9582^2 + 12921^2 .

It is not a de Polignac number, because 258766965 - 2² = 258766961 is a prime.

It is a super-2 number, since 2×258766965² = 133920684350622450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258766961) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2875144 + ... + 2875233.

It is an arithmetic number, because the mean of its divisors is an integer number (37377457).

Almost surely, 2^258766965 is an apocalyptic number.

It is an amenable number.

258766965 is a deficient number, since it is larger than the sum of its proper divisors (189762519).

258766965 is a wasteful number, since it uses less digits than its factorization.

258766965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750388 (or 5750385 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 258766965 is about 16086.2352649711. The cubic root of 258766965 is about 637.2398754191.

The spelling of 258766965 in words is "two hundred fifty-eight million, seven hundred sixty-six thousand, nine hundred sixty-five".