356661 has 12 divisors (see below), whose sum is σ = 537888. Its totient is φ = 227304.

The previous prime is 356647. The next prime is 356663. The reversal of 356661 is 166653.

It is not a de Polignac number, because 356661 - 2⁷ = 356533 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 356661.

It is not an unprimeable number, because it can be changed into a prime (356663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 655 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (44824).

2³⁵⁶⁶⁶¹ is an apocalyptic number.

It is an amenable number.

356661 is a deficient number, since it is larger than the sum of its proper divisors (181227).

356661 is a wasteful number, since it uses less digits than its factorization.

356661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752 (or 1749 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 356661 is about 597.2110179828. The cubic root of 356661 is about 70.9172480306.

The spelling of 356661 in words is "three hundred fifty-six thousand, six hundred sixty-one".