68667700 has 36 divisors (see below), whose sum is σ = 151465132. Its totient is φ = 27014400.

The previous prime is 68667631. The next prime is 68667707. The reversal of 68667700 is 776686.

It can be written as a sum of positive squares in 6 ways, for example, as 4218916 + 64448784 = 2054^2 + 8028^2 .

It is a super-4 number, since 4×68667700⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68667707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472 + ... + 11728.

Almost surely, 2^68667700 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 68667700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75732566).

68667700 is an abundant number, since it is smaller than the sum of its proper divisors (82797432).

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

68667700 is a wasteful number, since it uses less digits than its factorization.

68667700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332 (or 11325 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 68667700 is about 8286.5976130134. The cubic root of 68667700 is about 409.4971030212.

It can be divided in two parts, 686 and 67700, that added together give a palindrome (68386).

The spelling of 68667700 in words is "sixty-eight million, six hundred sixty-seven thousand, seven hundred".