63669 has 8 divisors (see below), whose sum is σ = 89440. Its totient is φ = 40176.

The previous prime is 63667. The next prime is 63671. The reversal of 63669 is 96636.

It is an interprime number because it is at equal distance from previous prime (63667) and next prime (63671).

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

It is not a de Polignac number, because 63669 - 2¹ = 63667 is a prime.

It is a super-2 number, since 2×63669² = 8107483122, 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 (63667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502 + ... + 615.

It is an arithmetic number, because the mean of its divisors is an integer number (11180).

2⁶³⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

63669 is a deficient number, since it is larger than the sum of its proper divisors (25771).

63669 is a wasteful number, since it uses less digits than its factorization.

63669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its digits is 5832, while the sum is 30.

The square root of 63669 is about 252.3271685729. The cubic root of 63669 is about 39.9309224426.

The spelling of 63669 in words is "sixty-three thousand, six hundred sixty-nine".