501669 has 12 divisors (see below), whose sum is σ = 828256. Its totient is φ = 286632.

The previous prime is 501659. The next prime is 501691. The reversal of 501669 is 966105.

It is not a de Polignac number, because 501669 - 2⁵ = 501637 is a prime.

It is a super-2 number, since 2×501669² = 503343571122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3919 + ... + 4044.

2⁵⁰¹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

501669 is a deficient number, since it is larger than the sum of its proper divisors (326587).

501669 is a wasteful number, since it uses less digits than its factorization.

501669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976 (or 7973 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 501669 is about 708.2859592001. The cubic root of 501669 is about 79.4582669298.

The spelling of 501669 in words is "five hundred one thousand, six hundred sixty-nine".