258027661 has 8 divisors (see below), whose sum is σ = 261483264. Its totient is φ = 254580480.

The previous prime is 258027659. The next prime is 258027701. The reversal of 258027661 is 166720852.

It is a happy number.

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 258027661 - 2¹ = 258027659 is a prime.

It is a super-2 number, since 2×258027661² = 133156547682261842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 258027661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258027641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80685 + ... + 83821.

It is an arithmetic number, because the mean of its divisors is an integer number (32685408).

Almost surely, 2^258027661 is an apocalyptic number.

It is an amenable number.

258027661 is a deficient number, since it is larger than the sum of its proper divisors (3455603).

258027661 is an equidigital number, since it uses as much as digits as its factorization.

258027661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 258027661 is about 16063.2394304511. The cubic root of 258027661 is about 636.6324262109.

The spelling of 258027661 in words is "two hundred fifty-eight million, twenty-seven thousand, six hundred sixty-one".