355986 has 12 divisors (see below), whose sum is σ = 771342. Its totient is φ = 118656.

The previous prime is 355969. The next prime is 356023. The reversal of 355986 is 689553.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 47961 = 555^2 + 219^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 355986.

It is a congruent number.

It is an unprimeable number.

355986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9871 + ... + 9906.

2³⁵⁵⁹⁸⁶ is an apocalyptic number.

355986 is an abundant number, since it is smaller than the sum of its proper divisors (415356).

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

355986 is a wasteful number, since it uses less digits than its factorization.

355986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19785 (or 19782 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 355986 is about 596.6456234651. The cubic root of 355986 is about 70.8724815506.

The spelling of 355986 in words is "three hundred fifty-five thousand, nine hundred eighty-six".