661298 has 8 divisors (see below), whose sum is σ = 1082160. Its totient is φ = 300580.

The previous prime is 661267. The next prime is 661321. The reversal of 661298 is 892166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15008 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (135270).

2⁶⁶¹²⁹⁸ is an apocalyptic number.

661298 is a deficient number, since it is larger than the sum of its proper divisors (420862).

661298 is a wasteful number, since it uses less digits than its factorization.

661298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30072.

The product of its digits is 5184, while the sum is 32.

The square root of 661298 is about 813.2023118511. The cubic root of 661298 is about 87.1229160550.

It can be divided in two parts, 661 and 298, that added together give a palindrome (959).

The spelling of 661298 in words is "six hundred sixty-one thousand, two hundred ninety-eight".