669682 has 16 divisors (see below), whose sum is σ = 1108800. Its totient is φ = 301392.

The previous prime is 669679. The next prime is 669689. The reversal of 669682 is 286966.

It is a super-2 number, since 2×669682² = 896947962248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (669689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819 + ... + 1417.

It is an arithmetic number, because the mean of its divisors is an integer number (69300).

2⁶⁶⁹⁶⁸² is an apocalyptic number.

669682 is a deficient number, since it is larger than the sum of its proper divisors (439118).

669682 is a wasteful number, since it uses less digits than its factorization.

669682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its digits is 31104, while the sum is 37.

The square root of 669682 is about 818.3410047162. The cubic root of 669682 is about 87.4895552159.

The spelling of 669682 in words is "six hundred sixty-nine thousand, six hundred eighty-two".