669695 has 8 divisors (see below), whose sum is σ = 865536. Its totient is φ = 494496.

The previous prime is 669689. The next prime is 669701. The reversal of 669695 is 596966.

It is an interprime number because it is at equal distance from previous prime (669689) and next prime (669701).

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

It is a cyclic number.

It is not a de Polignac number, because 669695 - 2⁴ = 669679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5087 + ... + 5216.

It is an arithmetic number, because the mean of its divisors is an integer number (108192).

2⁶⁶⁹⁶⁹⁵ is an apocalyptic number.

669695 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

669695 is a deficient number, since it is larger than the sum of its proper divisors (195841).

669695 is a wasteful number, since it uses less digits than its factorization.

669695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321.

The product of its digits is 87480, while the sum is 41.

The square root of 669695 is about 818.3489475768. The cubic root of 669695 is about 87.4901213337.

The spelling of 669695 in words is "six hundred sixty-nine thousand, six hundred ninety-five".