661314 has 16 divisors (see below), whose sum is σ = 1392480. Its totient is φ = 208800.

The previous prime is 661267. The next prime is 661321. The reversal of 661314 is 413166.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 661314.

It is an unprimeable number.

661314 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 7 ways as a sum of consecutive naturals, for example, 2787 + ... + 3014.

It is an arithmetic number, because the mean of its divisors is an integer number (87030).

2⁶⁶¹³¹⁴ is an apocalyptic number.

661314 is an abundant number, since it is smaller than the sum of its proper divisors (731166).

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

661314 is a wasteful number, since it uses less digits than its factorization.

661314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825.

The product of its digits is 432, while the sum is 21.

The square root of 661314 is about 813.2121494420. The cubic root of 661314 is about 87.1236186911.

The spelling of 661314 in words is "six hundred sixty-one thousand, three hundred fourteen".