68436810 has 96 divisors (see below), whose sum is σ = 198329040. Its totient is φ = 16257024.

The previous prime is 68436793. The next prime is 68436821. The reversal of 68436810 is 1863486.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 29909961 + 38526849 = 5469^2 + 6207^2 .

It is a super-2 number, since 2×68436810² = 9367193925952200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32922 + ... + 34938.

Almost surely, 2^68436810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68436810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99164520).

68436810 is an abundant number, since it is smaller than the sum of its proper divisors (129892230).

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

68436810 is a wasteful number, since it uses less digits than its factorization.

68436810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68436810 is about 8272.6543503280. The cubic root of 68436810 is about 409.0376198601.

The spelling of 68436810 in words is "sixty-eight million, four hundred thirty-six thousand, eight hundred ten".