258271660 has 12 divisors (see below), whose sum is σ = 542370528. Its totient is φ = 103308656.

The previous prime is 258271649. The next prime is 258271661. The reversal of 258271660 is 66172852.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (258271661) 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, 6456772 + ... + 6456811.

It is an arithmetic number, because the mean of its divisors is an integer number (45197544).

Almost surely, 2^258271660 is an apocalyptic number.

258271660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258271660 is an abundant number, since it is smaller than the sum of its proper divisors (284098868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258271660 is a wasteful number, since it uses less digits than its factorization.

258271660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913592 (or 12913590 counting only the distinct ones).

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

The square root of 258271660 is about 16070.8325857748. The cubic root of 258271660 is about 636.8330361461.

The spelling of 258271660 in words is "two hundred fifty-eight million, two hundred seventy-one thousand, six hundred sixty".