661282 has 4 divisors (see below), whose sum is σ = 991926. Its totient is φ = 330640.

The previous prime is 661267. The next prime is 661321. The reversal of 661282 is 282166.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 335241 + 326041 = 579^2 + 571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165319 + ... + 165322.

2⁶⁶¹²⁸² is an apocalyptic number.

661282 is a deficient number, since it is larger than the sum of its proper divisors (330644).

661282 is a wasteful number, since it uses less digits than its factorization.

661282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330643.

The product of its digits is 1152, while the sum is 25.

The square root of 661282 is about 813.1924741413. The cubic root of 661282 is about 87.1222134077.

The spelling of 661282 in words is "six hundred sixty-one thousand, two hundred eighty-two".