68406460 has 48 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 25081920.

The previous prime is 68406383. The next prime is 68406467. The reversal of 68406460 is 6460486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68406467) 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 15 ways as a sum of consecutive naturals, for example, 8877 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (3252480).

Almost surely, 2^68406460 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 68406460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78059520).

68406460 is an abundant number, since it is smaller than the sum of its proper divisors (87712580).

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

68406460 is a wasteful number, since it uses less digits than its factorization.

68406460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866 (or 5864 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 68406460 is about 8270.8197900813. The cubic root of 68406460 is about 408.9771449618.

The spelling of 68406460 in words is "sixty-eight million, four hundred six thousand, four hundred sixty".