258201661 has 8 divisors (see below), whose sum is σ = 273685824. Its totient is φ = 242750400.

The previous prime is 258201623. The next prime is 258201677. The reversal of 258201661 is 166102852.

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 258201661 - 2²¹ = 256104509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258207661) 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 7 ways as a sum of consecutive naturals, for example, 8986 + ... + 24436.

It is an arithmetic number, because the mean of its divisors is an integer number (34210728).

Almost surely, 2^258201661 is an apocalyptic number.

It is an amenable number.

258201661 is a deficient number, since it is larger than the sum of its proper divisors (15484163).

258201661 is a wasteful number, since it uses less digits than its factorization.

258201661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16451.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 258201661 is about 16068.6546107632. The cubic root of 258201661 is about 636.7754976308.

The spelling of 258201661 in words is "two hundred fifty-eight million, two hundred one thousand, six hundred sixty-one".