68163402 has 16 divisors (see below), whose sum is σ = 139652352. Its totient is φ = 22166880.

The previous prime is 68163401. The next prime is 68163419. The reversal of 68163402 is 20436186.

It is a self number, because there is not a number n which added to its sum of digits gives 68163402.

It is not an unprimeable number, because it can be changed into a prime (68163401) 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, 138298 + ... + 138789.

It is an arithmetic number, because the mean of its divisors is an integer number (8728272).

Almost surely, 2^68163402 is an apocalyptic number.

68163402 is an abundant number, since it is smaller than the sum of its proper divisors (71488950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68163402 is a wasteful number, since it uses less digits than its factorization.

68163402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277133.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 68163402 is about 8256.1130079475. The cubic root of 68163402 is about 408.4921852398.

Adding to 68163402 its reverse (20436186), we get a palindrome (88599588).

The spelling of 68163402 in words is "sixty-eight million, one hundred sixty-three thousand, four hundred two".