63679 has 8 divisors (see below), whose sum is σ = 79488. Its totient is φ = 49560.

The previous prime is 63671. The next prime is 63689. The reversal of 63679 is 97636.

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

It is not a de Polignac number, because 63679 - 2³ = 63671 is a prime.

It is a d-powerful number, because it can be written as 6 + 3⁷ + 6² + 7⁴ + 9⁵ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63671) 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, 337 + ... + 490.

It is an arithmetic number, because the mean of its divisors is an integer number (9936).

2⁶³⁶⁷⁹ is an apocalyptic number.

63679 is a deficient number, since it is larger than the sum of its proper divisors (15809).

63679 is a wasteful number, since it uses less digits than its factorization.

63679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its digits is 6804, while the sum is 31.

The square root of 63679 is about 252.3469833384. The cubic root of 63679 is about 39.9330128808.

The spelling of 63679 in words is "sixty-three thousand, six hundred seventy-nine".