661302 has 12 divisors (see below), whose sum is σ = 1432860. Its totient is φ = 220428.

The previous prime is 661267. The next prime is 661321. The reversal of 661302 is 203166.

It is a happy number.

661302 is a `hidden beast` number, since 661 + 3 + 0 + 2 = 666.

661302 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 36739 = 661302 / (6 + 6 + 1 + 3 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

661302 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, 18352 + ... + 18387.

It is an arithmetic number, because the mean of its divisors is an integer number (119405).

2⁶⁶¹³⁰² is an apocalyptic number.

661302 is an abundant number, since it is smaller than the sum of its proper divisors (771558).

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

661302 is a wasteful number, since it uses less digits than its factorization.

661302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36747 (or 36744 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 661302 is about 813.2047712600. The cubic root of 661302 is about 87.1230917151.

Adding to 661302 its reverse (203166), we get a palindrome (864468).

The spelling of 661302 in words is "six hundred sixty-one thousand, three hundred two".