68015700 has 144 divisors (see below), whose sum is σ = 222069120. Its totient is φ = 18079200.

The previous prime is 68015677. The next prime is 68015707. The reversal of 68015700 is 751086.

It is a super-2 number, since 2×68015700² = 9252270892980000, 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68015707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218545 + ... + 218855.

Almost surely, 2^68015700 is an apocalyptic number.

68015700 is a gapful number since it is divisible by the number (60) 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 68015700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111034560).

68015700 is an abundant number, since it is smaller than the sum of its proper divisors (154053420).

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

68015700 is a wasteful number, since it uses less digits than its factorization.

68015700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 68015700 is about 8247.1631486227. The cubic root of 68015700 is about 408.1969205123.

Adding to 68015700 its reverse (751086), we get a palindrome (68766786).

The spelling of 68015700 in words is "sixty-eight million, fifteen thousand, seven hundred".