168685963 has 4 divisors (see below), whose sum is σ = 170718408. Its totient is φ = 166653520.

The previous prime is 168685939. The next prime is 168685987. The reversal of 168685963 is 369586861.

168685963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (168685939) and next prime (168685987).

It is a cyclic number.

It is not a de Polignac number, because 168685963 - 2¹⁷ = 168554891 is a prime.

It is a super-2 number, since 2×168685963² = 56909908226474738, which contains 22 as substring.

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 168685963.

It is not an unprimeable number, because it can be changed into a prime (168685063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016098 + ... + 1016263.

It is an arithmetic number, because the mean of its divisors is an integer number (42679602).

Almost surely, 2^168685963 is an apocalyptic number.

168685963 is a deficient number, since it is larger than the sum of its proper divisors (2032445).

168685963 is an equidigital number, since it uses as much as digits as its factorization.

168685963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032444.

The product of its digits is 1866240, while the sum is 52.

The square root of 168685963 is about 12987.9160376097. The cubic root of 168685963 is about 552.5348154115.

The spelling of 168685963 in words is "one hundred sixty-eight million, six hundred eighty-five thousand, nine hundred sixty-three".