68910102 has 40 divisors (see below), whose sum is σ = 156551736. Its totient is φ = 22651488.

The previous prime is 68910091. The next prime is 68910109. The reversal of 68910102 is 20101986.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68910109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8913 + ... + 14739.

Almost surely, 2^68910102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68910102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78275868).

68910102 is an abundant number, since it is smaller than the sum of its proper divisors (87641634).

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

68910102 is a wasteful number, since it uses less digits than its factorization.

68910102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5914 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 68910102 is about 8301.2108755289. The cubic root of 68910102 is about 409.9783887082.

The spelling of 68910102 in words is "sixty-eight million, nine hundred ten thousand, one hundred two".