68610816 has 108 divisors (see below), whose sum is σ = 200512312. Its totient is φ = 22560768.

The previous prime is 68610799. The next prime is 68610821. The reversal of 68610816 is 61801686.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223335 + ... + 223641.

Almost surely, 2^68610816 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 68610816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100256156).

68610816 is an abundant number, since it is smaller than the sum of its proper divisors (131901496).

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

68610816 is a wasteful number, since it uses less digits than its factorization.

68610816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 68610816 is about 8283.1646126345. The cubic root of 68610816 is about 409.3839966245.

The spelling of 68610816 in words is "sixty-eight million, six hundred ten thousand, eight hundred sixteen".