332661 has 24 divisors (see below), whose sum is σ = 539904. Its totient is φ = 181440.

The previous prime is 332641. The next prime is 332687. The reversal of 332661 is 166233.

It is not a de Polignac number, because 332661 - 2¹³ = 324469 is a prime.

It is a super-2 number, since 2×332661² = 221326681842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4521 + ... + 4593.

It is an arithmetic number, because the mean of its divisors is an integer number (22496).

2³³²⁶⁶¹ is an apocalyptic number.

332661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

332661 is a deficient number, since it is larger than the sum of its proper divisors (207243).

332661 is a wasteful number, since it uses less digits than its factorization.

332661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 114 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 332661 is about 576.7677175432. The cubic root of 332661 is about 69.2894790681.

Adding to 332661 its reverse (166233), we get a palindrome (498894).

The spelling of 332661 in words is "three hundred thirty-two thousand, six hundred sixty-one".