669934 has 8 divisors (see below), whose sum is σ = 1012968. Its totient is φ = 332280.

The previous prime is 669931. The next prime is 669937. The reversal of 669934 is 439966.

It is an interprime number because it is at equal distance from previous prime (669931) and next prime (669937).

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

It is a junction number, because it is equal to n+sod(n) for n = 669893 and 669902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017 + ... + 1540.

It is an arithmetic number, because the mean of its divisors is an integer number (126621).

2⁶⁶⁹⁹³⁴ is an apocalyptic number.

669934 is a deficient number, since it is larger than the sum of its proper divisors (343034).

669934 is a wasteful number, since it uses less digits than its factorization.

669934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its digits is 34992, while the sum is 37.

The square root of 669934 is about 818.4949602777. The cubic root of 669934 is about 87.5005278880.

It can be divided in two parts, 66 and 9934, that added together give a 4-th power (10000 = 10⁴).

The spelling of 669934 in words is "six hundred sixty-nine thousand, nine hundred thirty-four".