168800639 has 6 divisors (see below), whose sum is σ = 196359984. Its totient is φ = 144686220.

The previous prime is 168800629. The next prime is 168800683. The reversal of 168800639 is 936008861.

It is a happy number.

It is not a de Polignac number, because 168800639 - 2⁸ = 168800383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168800596 and 168800605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168800609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1722407 + ... + 1722504.

It is an arithmetic number, because the mean of its divisors is an integer number (32726664).

Almost surely, 2^168800639 is an apocalyptic number.

168800639 is a deficient number, since it is larger than the sum of its proper divisors (27559345).

168800639 is an equidigital number, since it uses as much as digits as its factorization.

168800639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444925 (or 3444918 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 168800639 is about 12992.3300065847. The cubic root of 168800639 is about 552.6599950223.

The spelling of 168800639 in words is "one hundred sixty-eight million, eight hundred thousand, six hundred thirty-nine".