68890680 has 96 divisors (see below), whose sum is σ = 231154560. Its totient is φ = 17775360.

The previous prime is 68890669. The next prime is 68890691. The reversal of 68890680 is 8609886.

It is an interprime number because it is at equal distance from previous prime (68890669) and next prime (68890691).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8074 + ... + 14246.

It is an arithmetic number, because the mean of its divisors is an integer number (2407860).

Almost surely, 2^68890680 is an apocalyptic number.

68890680 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 68890680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115577280).

68890680 is an abundant number, since it is smaller than the sum of its proper divisors (162263880).

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

68890680 is a wasteful number, since it uses less digits than its factorization.

68890680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221 (or 6214 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 68890680 is about 8300.0409637543. The cubic root of 68890680 is about 409.9398682386.

The spelling of 68890680 in words is "sixty-eight million, eight hundred ninety thousand, six hundred eighty".