669794 has 4 divisors (see below), whose sum is σ = 1004694. Its totient is φ = 334896.

The previous prime is 669791. The next prime is 669839. The reversal of 669794 is 497966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 600625 + 69169 = 775^2 + 263^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669794.

It is not an unprimeable number, because it can be changed into a prime (669791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167447 + ... + 167450.

2⁶⁶⁹⁷⁹⁴ is an apocalyptic number.

669794 is a deficient number, since it is larger than the sum of its proper divisors (334900).

669794 is a wasteful number, since it uses less digits than its factorization.

669794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334899.

The product of its digits is 81648, while the sum is 41.

The square root of 669794 is about 818.4094329857. The cubic root of 669794 is about 87.4944322988.

The spelling of 669794 in words is "six hundred sixty-nine thousand, seven hundred ninety-four".