669502 has 4 divisors (see below), whose sum is σ = 1004256. Its totient is φ = 334750.

The previous prime is 669481. The next prime is 669527. The reversal of 669502 is 205966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205966 = 2 ⋅102983.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167374 + ... + 167377.

It is an arithmetic number, because the mean of its divisors is an integer number (251064).

2⁶⁶⁹⁵⁰² is an apocalyptic number.

669502 is a deficient number, since it is larger than the sum of its proper divisors (334754).

669502 is a wasteful number, since it uses less digits than its factorization.

669502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334753.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 669502 is about 818.2310187227. The cubic root of 669502 is about 87.4817159075.

The spelling of 669502 in words is "six hundred sixty-nine thousand, five hundred two".