68479818 has 32 divisors (see below), whose sum is σ = 150904512. Its totient is φ = 20544000.

The previous prime is 68479811. The next prime is 68479823. The reversal of 68479818 is 81897486.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68479811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (4715766).

Almost surely, 2^68479818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68479818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75452256).

68479818 is an abundant number, since it is smaller than the sum of its proper divisors (82424694).

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

68479818 is a wasteful number, since it uses less digits than its factorization.

68479818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10390.

The product of its digits is 774144, while the sum is 51.

The square root of 68479818 is about 8275.2533495960. The cubic root of 68479818 is about 409.1232862635.

The spelling of 68479818 in words is "sixty-eight million, four hundred seventy-nine thousand, eight hundred eighteen".