68013810 has 32 divisors (see below), whose sum is σ = 181370880. Its totient is φ = 18136944.

The previous prime is 68013791. The next prime is 68013817. The reversal of 68013810 is 1831086.

It is a super-2 number, since 2×68013810² = 9251756701432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68013817) 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, 125682 + ... + 126221.

It is an arithmetic number, because the mean of its divisors is an integer number (5667840).

Almost surely, 2^68013810 is an apocalyptic number.

68013810 is an abundant number, since it is smaller than the sum of its proper divisors (113357070).

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

68013810 is a wasteful number, since it uses less digits than its factorization.

68013810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251919 (or 251913 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 68013810 is about 8247.0485629709. The cubic root of 68013810 is about 408.1931395258.

Adding to 68013810 its reverse (1831086), we get a palindrome (69844896).

The spelling of 68013810 in words is "sixty-eight million, thirteen thousand, eight hundred ten".