68950840 has 96 divisors (see below), whose sum is σ = 182545920. Its totient is φ = 23369472.

The previous prime is 68950837. The next prime is 68950841. The reversal of 68950840 is 4805986.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 68950793 and 68950802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68950841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248782 + ... + 249058.

It is an arithmetic number, because the mean of its divisors is an integer number (1901520).

Almost surely, 2^68950840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68950840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91272960).

68950840 is an abundant number, since it is smaller than the sum of its proper divisors (113595080).

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

68950840 is a wasteful number, since it uses less digits than its factorization.

68950840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 68950840 is about 8303.6642514013. The cubic root of 68950840 is about 410.0591625908.

It can be divided in two parts, 689 and 50840, that added together give a square (51529 = 227²).

The spelling of 68950840 in words is "sixty-eight million, nine hundred fifty thousand, eight hundred forty".