669734 has 8 divisors (see below), whose sum is σ = 1081920. Its totient is φ = 309096.

The previous prime is 669733. The next prime is 669763. The reversal of 669734 is 437966.

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 = 669694 and 669703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12854 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (135240).

2⁶⁶⁹⁷³⁴ is an apocalyptic number.

669734 is a deficient number, since it is larger than the sum of its proper divisors (412186).

669734 is a wasteful number, since it uses less digits than its factorization.

669734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25774.

The product of its digits is 27216, while the sum is 35.

The square root of 669734 is about 818.3727756958. The cubic root of 669734 is about 87.4918196434.

The spelling of 669734 in words is "six hundred sixty-nine thousand, seven hundred thirty-four".