68616704 has 80 divisors (see below), whose sum is σ = 150953880. Its totient is φ = 31150080.

The previous prime is 68616689. The next prime is 68616719. The reversal of 68616704 is 40761686.

It is an interprime number because it is at equal distance from previous prime (68616689) and next prime (68616719).

It can be written as a sum of positive squares in 4 ways, for example, as 719104 + 67897600 = 848^2 + 8240^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124834 + ... + 1124894.

Almost surely, 2^68616704 is an apocalyptic number.

68616704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68616704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75476940).

68616704 is an abundant number, since it is smaller than the sum of its proper divisors (82337176).

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

68616704 is an frugal number, since it uses more digits than its factorization.

68616704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 68616704 is about 8283.5200247238. The cubic root of 68616704 is about 409.3957070426.

The spelling of 68616704 in words is "sixty-eight million, six hundred sixteen thousand, seven hundred four".